7.8
HIGH
CVE-2018-8897
Intel x86 Architecture Debug Exception Deferral Vulnerability
Description

A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures Software Developer's Manual (SDM) was mishandled in the development of some or all operating-system kernels, resulting in unexpected behavior for #DB exceptions that are deferred by MOV SS or POP SS, as demonstrated by (for example) privilege escalation in Windows, macOS, some Xen configurations, or FreeBSD, or a Linux kernel crash. The MOV to SS and POP SS instructions inhibit interrupts (including NMIs), data breakpoints, and single step trap exceptions until the instruction boundary following the next instruction (SDM Vol. 3A; section 6.8.3). (The inhibited data breakpoints are those on memory accessed by the MOV to SS or POP to SS instruction itself.) Note that debug exceptions are not inhibited by the interrupt enable (EFLAGS.IF) system flag (SDM Vol. 3A; section 2.3). If the instruction following the MOV to SS or POP to SS instruction is an instruction like SYSCALL, SYSENTER, INT 3, etc. that transfers control to the operating system at CPL < 3, the debug exception is delivered after the transfer to CPL < 3 is complete. OS kernels may not expect this order of events and may therefore experience unexpected behavior when it occurs.

INFO

Published Date :

May 8, 2018, 6:29 p.m.

Last Modified :

Oct. 3, 2019, 12:03 a.m.

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

1.8
Public PoC/Exploit Available at Github

CVE-2018-8897 has a 38 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2018-8897 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Redhat enterprise_linux_server
2 Redhat enterprise_linux_workstation
3 Redhat enterprise_virtualization_manager
1 Synology skynas
2 Synology diskstation_manager
1 Canonical ubuntu_linux
1 Debian debian_linux
1 Freebsd freebsd
1 Xen xen
1 Apple mac_os_x
1 Citrix xenserver
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2018-8897.

URL Resource
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d8ba61ba58c88d5207c1ba2f7d9a2280e7d03be9 Patch Third Party Advisory
http://openwall.com/lists/oss-security/2018/05/08/1 Mailing List Third Party Advisory
http://openwall.com/lists/oss-security/2018/05/08/4 Mailing List Third Party Advisory
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20190921-01-debug-en
http://www.securityfocus.com/bid/104071 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1040744 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1040849 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1040861 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1040866 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1040882 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:1318 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1319 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1345 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1346 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1347 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1348 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1349 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1350 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1351 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1352 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1353 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1354 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1355 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1524 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1567074 Issue Tracking Third Party Advisory
https://github.com/can1357/CVE-2018-8897/ Exploit Third Party Advisory
https://github.com/torvalds/linux/commit/d8ba61ba58c88d5207c1ba2f7d9a2280e7d03be9 Patch Third Party Advisory
https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
https://lists.debian.org/debian-lts-announce/2018/05/msg00015.html Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/06/msg00000.html Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/11/msg00013.html
https://patchwork.kernel.org/patch/10386677/ Patch Third Party Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8897 Patch Third Party Advisory Vendor Advisory
https://security.netapp.com/advisory/ntap-20180927-0002/
https://support.apple.com/HT208742 Third Party Advisory
https://support.citrix.com/article/CTX234679 Third Party Advisory
https://svnweb.freebsd.org/base?view=revision&revision=333368 Third Party Advisory
https://usn.ubuntu.com/3641-1/ Third Party Advisory
https://usn.ubuntu.com/3641-2/ Third Party Advisory
https://www.debian.org/security/2018/dsa-4196 Third Party Advisory
https://www.debian.org/security/2018/dsa-4201 Third Party Advisory
https://www.exploit-db.com/exploits/44697/ Exploit Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/45024/
https://www.freebsd.org/security/advisories/FreeBSD-SA-18:06.debugreg.asc Third Party Advisory
https://www.kb.cert.org/vuls/id/631579
https://www.synology.com/support/security/Synology_SA_18_21 Third Party Advisory
https://www.triplefault.io/2018/05/spurious-db-exceptions-with-pop-ss.html Third Party Advisory
https://xenbits.xen.org/xsa/advisory-260.html Patch Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

RedTeam link

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Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2018-8897 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2018-8897 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CWE Remap by [email protected]

    Oct. 03, 2019

    Action Type Old Value New Value
    Changed CWE CWE-264 CWE-264 CWE-362
  • CVE Modified by [email protected]

    Sep. 21, 2019

    Action Type Old Value New Value
    Added Reference http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20190921-01-debug-en [No Types Assigned]
  • CVE Modified by [email protected]

    Jan. 03, 2019

    Action Type Old Value New Value
    Added Reference https://www.kb.cert.org/vuls/id/631579 [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 30, 2018

    Action Type Old Value New Value
    Added Reference https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0 [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 13, 2018

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2018/11/msg00013.html [No Types Assigned]
  • CVE Modified by [email protected]

    Sep. 28, 2018

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20180927-0002/ [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 28, 2018

    Action Type Old Value New Value
    Added Reference https://www.exploit-db.com/exploits/45024/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Jun. 20, 2018

    Action Type Old Value New Value
    Added CVSS V2 (AV:L/AC:L/Au:N/C:C/I:C/A:C)
    Added CVSS V3 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://access.redhat.com/errata/RHSA-2018:1349 No Types Assigned https://access.redhat.com/errata/RHSA-2018:1349 Third Party Advisory
    Changed Reference Type https://usn.ubuntu.com/3641-2/ No Types Assigned https://usn.ubuntu.com/3641-2/ Third Party Advisory
    Changed Reference Type https://access.redhat.com/errata/RHSA-2018:1347 No Types Assigned https://access.redhat.com/errata/RHSA-2018:1347 Third Party Advisory
    Changed Reference Type https://github.com/can1357/CVE-2018-8897/ No Types Assigned https://github.com/can1357/CVE-2018-8897/ Exploit, Third Party Advisory
    Changed Reference Type https://www.exploit-db.com/exploits/44697/ No Types Assigned https://www.exploit-db.com/exploits/44697/ Exploit, Third Party Advisory, VDB Entry
    Changed Reference Type https://access.redhat.com/errata/RHSA-2018:1348 No Types Assigned https://access.redhat.com/errata/RHSA-2018:1348 Third Party Advisory
    Changed Reference Type https://access.redhat.com/errata/RHSA-2018:1524 No Types Assigned https://access.redhat.com/errata/RHSA-2018:1524 Third Party Advisory
    Changed Reference Type https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8897 No Types Assigned https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8897 Patch, Third Party Advisory, Vendor Advisory
    Changed Reference Type https://www.triplefault.io/2018/05/spurious-db-exceptions-with-pop-ss.html No Types Assigned https://www.triplefault.io/2018/05/spurious-db-exceptions-with-pop-ss.html Third Party Advisory
    Changed Reference Type https://www.synology.com/support/security/Synology_SA_18_21 No Types Assigned https://www.synology.com/support/security/Synology_SA_18_21 Third Party Advisory
    Changed Reference Type https://github.com/torvalds/linux/commit/d8ba61ba58c88d5207c1ba2f7d9a2280e7d03be9 No Types Assigned https://github.com/torvalds/linux/commit/d8ba61ba58c88d5207c1ba2f7d9a2280e7d03be9 Patch, Third Party Advisory
    Changed Reference Type https://www.debian.org/security/2018/dsa-4201 No Types Assigned https://www.debian.org/security/2018/dsa-4201 Third Party Advisory
    Changed Reference Type http://www.securitytracker.com/id/1040866 No Types Assigned http://www.securitytracker.com/id/1040866 Third Party Advisory, VDB Entry
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1567074 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1567074 Issue Tracking, Third Party Advisory
    Changed Reference Type http://www.securitytracker.com/id/1040744 No Types Assigned http://www.securitytracker.com/id/1040744 Third Party Advisory, VDB Entry
    Changed Reference Type http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d8ba61ba58c88d5207c1ba2f7d9a2280e7d03be9 No Types Assigned http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d8ba61ba58c88d5207c1ba2f7d9a2280e7d03be9 Patch, Third Party Advisory
    Changed Reference Type http://www.securitytracker.com/id/1040861 No Types Assigned http://www.securitytracker.com/id/1040861 Third Party Advisory, VDB Entry
    Changed Reference Type http://www.securitytracker.com/id/1040882 No Types Assigned http://www.securitytracker.com/id/1040882 Third Party Advisory, VDB Entry
    Changed Reference Type https://access.redhat.com/errata/RHSA-2018:1354 No Types Assigned https://access.redhat.com/errata/RHSA-2018:1354 Third Party Advisory
    Changed Reference Type https://access.redhat.com/errata/RHSA-2018:1355 No Types Assigned https://access.redhat.com/errata/RHSA-2018:1355 Third Party Advisory
    Changed Reference Type https://xenbits.xen.org/xsa/advisory-260.html No Types Assigned https://xenbits.xen.org/xsa/advisory-260.html Patch, Third Party Advisory
    Changed Reference Type http://www.securitytracker.com/id/1040849 No Types Assigned http://www.securitytracker.com/id/1040849 Third Party Advisory, VDB Entry
    Changed Reference Type https://access.redhat.com/errata/RHSA-2018:1352 No Types Assigned https://access.redhat.com/errata/RHSA-2018:1352 Third Party Advisory
    Changed Reference Type https://access.redhat.com/errata/RHSA-2018:1353 No Types Assigned https://access.redhat.com/errata/RHSA-2018:1353 Third Party Advisory
    Changed Reference Type https://access.redhat.com/errata/RHSA-2018:1350 No Types Assigned https://access.redhat.com/errata/RHSA-2018:1350 Third Party Advisory
    Changed Reference Type https://access.redhat.com/errata/RHSA-2018:1351 No Types Assigned https://access.redhat.com/errata/RHSA-2018:1351 Third Party Advisory
    Changed Reference Type https://access.redhat.com/errata/RHSA-2018:1318 No Types Assigned https://access.redhat.com/errata/RHSA-2018:1318 Third Party Advisory
    Changed Reference Type http://openwall.com/lists/oss-security/2018/05/08/1 No Types Assigned http://openwall.com/lists/oss-security/2018/05/08/1 Mailing List, Third Party Advisory
    Changed Reference Type https://access.redhat.com/errata/RHSA-2018:1319 No Types Assigned https://access.redhat.com/errata/RHSA-2018:1319 Third Party Advisory
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2018/06/msg00000.html No Types Assigned https://lists.debian.org/debian-lts-announce/2018/06/msg00000.html Third Party Advisory
    Changed Reference Type https://support.apple.com/HT208742 No Types Assigned https://support.apple.com/HT208742 Third Party Advisory
    Changed Reference Type https://usn.ubuntu.com/3641-1/ No Types Assigned https://usn.ubuntu.com/3641-1/ Third Party Advisory
    Changed Reference Type http://openwall.com/lists/oss-security/2018/05/08/4 No Types Assigned http://openwall.com/lists/oss-security/2018/05/08/4 Mailing List, Third Party Advisory
    Changed Reference Type https://www.freebsd.org/security/advisories/FreeBSD-SA-18:06.debugreg.asc No Types Assigned https://www.freebsd.org/security/advisories/FreeBSD-SA-18:06.debugreg.asc Third Party Advisory
    Changed Reference Type http://www.securityfocus.com/bid/104071 No Types Assigned http://www.securityfocus.com/bid/104071 Third Party Advisory, VDB Entry
    Changed Reference Type https://svnweb.freebsd.org/base?view=revision&revision=333368 No Types Assigned https://svnweb.freebsd.org/base?view=revision&revision=333368 Third Party Advisory
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2018/05/msg00015.html No Types Assigned https://lists.debian.org/debian-lts-announce/2018/05/msg00015.html Third Party Advisory
    Changed Reference Type https://patchwork.kernel.org/patch/10386677/ No Types Assigned https://patchwork.kernel.org/patch/10386677/ Patch, Third Party Advisory
    Changed Reference Type https://www.debian.org/security/2018/dsa-4196 No Types Assigned https://www.debian.org/security/2018/dsa-4196 Third Party Advisory
    Changed Reference Type https://access.redhat.com/errata/RHSA-2018:1345 No Types Assigned https://access.redhat.com/errata/RHSA-2018:1345 Third Party Advisory
    Changed Reference Type https://access.redhat.com/errata/RHSA-2018:1346 No Types Assigned https://access.redhat.com/errata/RHSA-2018:1346 Third Party Advisory
    Changed Reference Type https://support.citrix.com/article/CTX234679 No Types Assigned https://support.citrix.com/article/CTX234679 Third Party Advisory
    Added CWE CWE-264
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_virtualization_manager:3.0:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:a:citrix:xenserver:6.0.2:*:*:*:*:*:*:* *cpe:2.3:a:citrix:xenserver:6.2.0:*:*:*:*:*:*:* *cpe:2.3:a:citrix:xenserver:6.5:*:*:*:*:*:*:* *cpe:2.3:a:citrix:xenserver:7.0:*:*:*:*:*:*:* *cpe:2.3:a:citrix:xenserver:7.1:*:*:*:*:*:*:* *cpe:2.3:a:citrix:xenserver:7.2:*:*:*:*:*:*:* *cpe:2.3:a:citrix:xenserver:7.3:*:*:*:*:*:*:* *cpe:2.3:a:citrix:xenserver:7.4:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:a:synology:skynas:-:*:*:*:*:*:*:* *cpe:2.3:o:synology:diskstation_manager:5.2:*:*:*:*:*:*:* *cpe:2.3:o:synology:diskstation_manager:6.0:*:*:*:*:*:*:* *cpe:2.3:o:synology:diskstation_manager:6.1:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* versions up to (excluding) 10.13.4
    Added CPE Configuration OR *cpe:2.3:o:xen:xen:-:*:*:*:*:*:x86:*
    Added CPE Configuration OR *cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:* versions from (including) 11.0 up to (excluding) 11.1
  • CVE Modified by [email protected]

    Jun. 03, 2018

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2018/06/msg00000.html [No Types Assigned]
  • CVE Modified by [email protected]

    May. 30, 2018

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/3641-1/ [No Types Assigned]
  • CVE Modified by [email protected]

    May. 27, 2018

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2018/05/msg00015.html [No Types Assigned]
  • CVE Modified by [email protected]

    May. 25, 2018

    Action Type Old Value New Value
    Added Reference https://www.exploit-db.com/exploits/44697/ [No Types Assigned]
  • CVE Modified by [email protected]

    May. 19, 2018

    Action Type Old Value New Value
    Added Reference https://github.com/can1357/CVE-2018-8897/ [No Types Assigned]
  • CVE Modified by [email protected]

    May. 18, 2018

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2018/dsa-4201 [No Types Assigned]
  • CVE Modified by [email protected]

    May. 17, 2018

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2018:1524 [No Types Assigned]
  • CVE Modified by [email protected]

    May. 11, 2018

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2018/dsa-4196 [No Types Assigned]
    Added Reference http://www.securitytracker.com/id/1040882 [No Types Assigned]
    Added Reference http://www.securitytracker.com/id/1040866 [No Types Assigned]
    Added Reference http://www.securitytracker.com/id/1040861 [No Types Assigned]
    Added Reference http://www.securitytracker.com/id/1040744 [No Types Assigned]
  • CVE Modified by [email protected]

    May. 10, 2018

    Action Type Old Value New Value
    Added Reference https://www.triplefault.io/2018/05/spurious-db-exceptions-with-pop-ss.html [No Types Assigned]
    Added Reference https://www.synology.com/support/security/Synology_SA_18_21 [No Types Assigned]
    Added Reference https://usn.ubuntu.com/3641-2/ [No Types Assigned]
    Added Reference https://support.citrix.com/article/CTX234679 [No Types Assigned]
    Added Reference https://patchwork.kernel.org/patch/10386677/ [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2018:1355 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2018:1354 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2018:1353 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2018:1352 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2018:1351 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2018:1350 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2018:1349 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2018:1348 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2018:1347 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2018:1346 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2018:1345 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2018:1319 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2018:1318 [No Types Assigned]
    Added Reference http://www.securitytracker.com/id/1040849 [No Types Assigned]
    Added Reference http://www.securityfocus.com/bid/104071 [No Types Assigned]
  • CVE Modified by [email protected]

    May. 09, 2018

    Action Type Old Value New Value
    Changed Description A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures Software Developer's Manual (SDM) was mishandled in the development of some or all operating-system kernels, resulting in unexpected behavior for #DB exceptions that are deferred by MOV SS or POP SS, as demonstrated by (for example) privilege escalation in some Xen configurations or FreeBSD, or a Linux kernel crash. The MOV to SS and POP SS instructions inhibit interrupts (including NMIs), data breakpoints, and single step trap exceptions until the instruction boundary following the next instruction (SDM Vol. 3A; section 6.8.3). (The inhibited data breakpoints are those on memory accessed by the MOV to SS or POP to SS instruction itself.) Note that debug exceptions are not inhibited by the interrupt enable (EFLAGS.IF) system flag (SDM Vol 3A; section 2.3). If the instruction following the MOV to SS or POP to SS instruction is an instruction like SYSCALL, SYSENTER, INT 3, etc. that transfers control to the operating system at CPL < 3, the debug exception is delivered after the transfer to CPL < 3 is complete. OS kernels may not expect this order of events and may therefore experience unexpected behavior when it occurs. A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures Software Developer's Manual (SDM) was mishandled in the development of some or all operating-system kernels, resulting in unexpected behavior for #DB exceptions that are deferred by MOV SS or POP SS, as demonstrated by (for example) privilege escalation in Windows, macOS, some Xen configurations, or FreeBSD, or a Linux kernel crash. The MOV to SS and POP SS instructions inhibit interrupts (including NMIs), data breakpoints, and single step trap exceptions until the instruction boundary following the next instruction (SDM Vol. 3A; section 6.8.3). (The inhibited data breakpoints are those on memory accessed by the MOV to SS or POP to SS instruction itself.) Note that debug exceptions are not inhibited by the interrupt enable (EFLAGS.IF) system flag (SDM Vol. 3A; section 2.3). If the instruction following the MOV to SS or POP to SS instruction is an instruction like SYSCALL, SYSENTER, INT 3, etc. that transfers control to the operating system at CPL < 3, the debug exception is delivered after the transfer to CPL < 3 is complete. OS kernels may not expect this order of events and may therefore experience unexpected behavior when it occurs.
    Added Reference https://svnweb.freebsd.org/base?view=revision&revision=333368 [No Types Assigned]
    Added Reference https://support.apple.com/HT208742 [No Types Assigned]
    Added Reference https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8897 [No Types Assigned]
    Added Reference http://openwall.com/lists/oss-security/2018/05/08/4 [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2018-8897 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2018-8897 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.07 }} -0.01%

score

0.28953

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability