7.8
HIGH
CVE-2016-1840
Apple libxml2 Heap-based Buffer Overflow Vulnerability
Description

Heap-based buffer overflow in the xmlFAParsePosCharGroup function in libxml2 before 2.9.4, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted XML document.

INFO

Published Date :

May 20, 2016, 10:59 a.m.

Last Modified :

March 25, 2019, 5:27 p.m.

Source :

[email protected]

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

1.8
Affected Products

The following products are affected by CVE-2016-1840 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_desktop
2 Redhat enterprise_linux_server
3 Redhat enterprise_linux_workstation
4 Redhat enterprise_linux_server_aus
5 Redhat enterprise_linux_server_eus
6 Redhat enterprise_linux_server_tus
1 Apple mac_os_x
2 Apple iphone_os
3 Apple tvos
4 Apple watchos
1 Canonical ubuntu_linux
1 Debian debian_linux
1 Xmlsoft libxml2
1 Mcafee web_gateway
: Total Affected Vendor : 6 | Products : 14
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-2016-1840.

URL Resource
http://lists.apple.com/archives/security-announce/2016/May/msg00001.html Mailing List Vendor Advisory
http://lists.apple.com/archives/security-announce/2016/May/msg00002.html Mailing List Vendor Advisory
http://lists.apple.com/archives/security-announce/2016/May/msg00003.html Mailing List Vendor Advisory
http://lists.apple.com/archives/security-announce/2016/May/msg00004.html Mailing List Vendor Advisory
http://rhn.redhat.com/errata/RHSA-2016-2957.html Third Party Advisory
http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html Third Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html Third Party Advisory
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html Third Party Advisory
http://www.securityfocus.com/bid/90691 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1035890 Third Party Advisory VDB Entry
http://www.ubuntu.com/usn/USN-2994-1 Third Party Advisory
http://xmlsoft.org/news.html Release Notes Vendor Advisory
https://access.redhat.com/errata/RHSA-2016:1292 Third Party Advisory
https://bugzilla.gnome.org/show_bug.cgi?id=757711 Exploit Issue Tracking Third Party Advisory
https://git.gnome.org/browse/libxml2/commit/?id=cbb271655cadeb8dbb258a64701d9a3a0c4835b4 Patch Third Party Advisory
https://kc.mcafee.com/corporate/index?page=content&id=SB10170 Patch Third Party Advisory
https://security.gentoo.org/glsa/201701-37 Third Party Advisory
https://support.apple.com/HT206564 Vendor Advisory
https://support.apple.com/HT206566 Vendor Advisory
https://support.apple.com/HT206567 Vendor Advisory
https://support.apple.com/HT206568 Vendor Advisory
https://www.debian.org/security/2016/dsa-3593 Third Party Advisory
https://www.tenable.com/security/tns-2016-18 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).

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

The following list is the news that have been mention CVE-2016-1840 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2016-1840 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
  • Modified Analysis by [email protected]

    Mar. 25, 2019

    Action Type Old Value New Value
    Changed CVSS V3 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Changed Reference Type https://security.gentoo.org/glsa/201701-37 No Types Assigned https://security.gentoo.org/glsa/201701-37 Third Party Advisory
    Changed Reference Type https://bugzilla.gnome.org/show_bug.cgi?id=757711 No Types Assigned https://bugzilla.gnome.org/show_bug.cgi?id=757711 Exploit, Issue Tracking, Third Party Advisory
    Changed Reference Type http://xmlsoft.org/news.html No Types Assigned http://xmlsoft.org/news.html Release Notes, Vendor Advisory
    Changed Reference Type http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html No Types Assigned http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html Third Party Advisory
    Changed Reference Type http://lists.apple.com/archives/security-announce/2016/May/msg00001.html Vendor Advisory http://lists.apple.com/archives/security-announce/2016/May/msg00001.html Mailing List, Vendor Advisory
    Changed Reference Type https://access.redhat.com/errata/RHSA-2016:1292 No Types Assigned https://access.redhat.com/errata/RHSA-2016:1292 Third Party Advisory
    Changed Reference Type https://kc.mcafee.com/corporate/index?page=content&id=SB10170 No Types Assigned https://kc.mcafee.com/corporate/index?page=content&id=SB10170 Patch, Third Party Advisory
    Changed Reference Type http://www.securityfocus.com/bid/90691 No Types Assigned http://www.securityfocus.com/bid/90691 Third Party Advisory, VDB Entry
    Changed Reference Type http://lists.apple.com/archives/security-announce/2016/May/msg00004.html Vendor Advisory http://lists.apple.com/archives/security-announce/2016/May/msg00004.html Mailing List, Vendor Advisory
    Changed Reference Type http://rhn.redhat.com/errata/RHSA-2016-2957.html No Types Assigned http://rhn.redhat.com/errata/RHSA-2016-2957.html Third Party Advisory
    Changed Reference Type http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html No Types Assigned http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html Third Party Advisory
    Changed Reference Type https://git.gnome.org/browse/libxml2/commit/?id=cbb271655cadeb8dbb258a64701d9a3a0c4835b4 No Types Assigned https://git.gnome.org/browse/libxml2/commit/?id=cbb271655cadeb8dbb258a64701d9a3a0c4835b4 Patch, Third Party Advisory
    Changed Reference Type http://www.ubuntu.com/usn/USN-2994-1 No Types Assigned http://www.ubuntu.com/usn/USN-2994-1 Third Party Advisory
    Changed Reference Type http://lists.apple.com/archives/security-announce/2016/May/msg00002.html Vendor Advisory http://lists.apple.com/archives/security-announce/2016/May/msg00002.html Mailing List, Vendor Advisory
    Changed Reference Type http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html No Types Assigned http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html Third Party Advisory
    Changed Reference Type http://lists.apple.com/archives/security-announce/2016/May/msg00003.html Vendor Advisory http://lists.apple.com/archives/security-announce/2016/May/msg00003.html Mailing List, Vendor Advisory
    Changed Reference Type https://www.debian.org/security/2016/dsa-3593 No Types Assigned https://www.debian.org/security/2016/dsa-3593 Third Party Advisory
    Changed Reference Type http://www.securitytracker.com/id/1035890 No Types Assigned http://www.securitytracker.com/id/1035890 Third Party Advisory, VDB Entry
    Changed Reference Type https://www.tenable.com/security/tns-2016-18 No Types Assigned https://www.tenable.com/security/tns-2016-18 Third Party Advisory
    Changed CPE Configuration OR *cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* versions up to (including) 9.3.1 *cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* versions up to (including) 10.11.4 *cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* versions up to (including) 9.2 *cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* versions up to (including) 2.2 OR *cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* versions up to (excluding) 9.3.2 *cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* versions up to (excluding) 10.11.5 *cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* versions up to (excluding) 9.2.1 *cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* versions up to (excluding) 2.2.1
    Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_eus:7.2:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_tus:7.2:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_tus:7.3:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:* versions up to (excluding) 2.9.4
    Added CPE Configuration OR *cpe:2.3:a:mcafee:web_gateway:*:*:*:*:*:*:*:* versions from (including) 7.5.0.0 up to (including) 7.5.2.10 *cpe:2.3:a:mcafee:web_gateway:*:*:*:*:*:*:*:* versions from (including) 7.6.0.0 up to (including) 7.6.2.3
  • CPE Deprecation Remap by [email protected]

    Mar. 08, 2019

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:apple:apple_tv:*:*:*:*:*:*:*:* versions from (including) 9.2 OR *cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* versions from (including) 9.2
  • CVE Modified by [email protected]

    Jan. 05, 2018

    Action Type Old Value New Value
    Added Reference http://rhn.redhat.com/errata/RHSA-2016-2957.html [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 30, 2017

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/90691 [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 01, 2017

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/201701-37 [No Types Assigned]
  • CVE Modified by [email protected]

    Mar. 01, 2017

    Action Type Old Value New Value
    Added Reference https://www.tenable.com/security/tns-2016-18 [No Types Assigned]
  • CVE Modified by [email protected]

    Dec. 28, 2016

    Action Type Old Value New Value
    Added Reference https://kc.mcafee.com/corporate/index?page=content&id=SB10170 [No Types Assigned]
  • CVE Modified by [email protected]

    Dec. 01, 2016

    Action Type Old Value New Value
    Added Reference http://www.securitytracker.com/id/1035890 [No Types Assigned]
  • CVE Modified by [email protected]

    Sep. 28, 2016

    Action Type Old Value New Value
    Added Reference http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
  • CVE Modified by [email protected]

    Sep. 23, 2016

    Action Type Old Value New Value
    Added Reference http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
  • CVE Modified by [email protected]

    Sep. 09, 2016

    Action Type Old Value New Value
    Added Reference http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
  • CVE Translated by [email protected]

    Jul. 31, 2016

    Action Type Old Value New Value
    Removed Translation libxml2, como se utiliza en Apple iOS en versiones anteriores a 9.3.2, OS X en versiones anteriores a 10.11.5, tvOS en versiones anteriores a 9.2.1 y watchOS en versiones anteriores a 2.2.1, permite a atacantes remotos ejecutar código arbitrario o causar una denegación de servicio (corrupción de memoria) a través de un documento XML manipulado, una vulnerabilidad diferente a CVE-2016-1833, CVE-2016-1834, CVE-2016-1836, CVE-2016-1837, CVE-2016-1838, y CVE-2016-1839.
    Added Translation Desbordamiento del buffer basado en memoria dinámica en la función xmlFAParsePosCharGroup en libxml2 en versiones anteriores a 2.9.4, como se utiliza en Apple iOS en versiones anteriores a 9.3.2, OS X en versiones anteriores a 10.11.5, tvOS en versiones anteriores a 9.2.1 y watchOS en versiones anteriores a 2.2.1, permite a atacantes remotos ejecutar un código arbitrario o provocar una denegación de servicio (corrupción de memoria) a través de un documento XML manipulado.
  • CVE Modified by [email protected]

    Jul. 28, 2016

    Action Type Old Value New Value
    Changed Description libxml2, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted XML document, a different vulnerability than CVE-2016-1833, CVE-2016-1834, CVE-2016-1836, CVE-2016-1837, CVE-2016-1838, and CVE-2016-1839. Heap-based buffer overflow in the xmlFAParsePosCharGroup function in libxml2 before 2.9.4, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted XML document.
    Added Reference https://bugzilla.gnome.org/show_bug.cgi?id=757711
    Added Reference https://git.gnome.org/browse/libxml2/commit/?id=cbb271655cadeb8dbb258a64701d9a3a0c4835b4
    Added Reference http://xmlsoft.org/news.html
  • CVE Modified by [email protected]

    Jul. 14, 2016

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2016:1292
  • Modified Analysis by [email protected]

    Jun. 15, 2016

    Action Type Old Value New Value
    Changed CPE Configuration Configuration 1 OR *cpe:2.3:o:apple:mac_os_x:10.11.4:*:*:*:*:*:*:* (and previous) *cpe:2.3:o:apple:watchos:2.2:*:*:*:*:*:*:* (and previous) *cpe:2.3:o:apple:apple_tv:9.2:*:*:*:*:*:*:* (and previous) *cpe:2.3:o:apple:iphone_os:9.3.1:*:*:*:*:*:*:* (and previous) Configuration 1 OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Configuration 2 OR *cpe:2.3:o:apple:mac_os_x:10.11.4:*:*:*:*:*:*:* (and previous) *cpe:2.3:o:apple:watchos:2.2:*:*:*:*:*:*:* (and previous) *cpe:2.3:o:apple:apple_tv:9.2:*:*:*:*:*:*:* (and previous) *cpe:2.3:o:apple:iphone_os:9.3.1:*:*:*:*:*:*:* (and previous) Configuration 3 OR *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
  • CVE Modified by [email protected]

    Jun. 11, 2016

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2016/dsa-3593
    Added Reference http://www.ubuntu.com/usn/USN-2994-1
  • Modified Analysis by [email protected]

    May. 20, 2016

    Action Type Old Value New Value
    Added CPE Configuration Configuration 1 OR *cpe:2.3:o:apple:mac_os_x:10.11.4:*:*:*:*:*:*:* (and previous) *cpe:2.3:o:apple:watchos:2.2:*:*:*:*:*:*:* (and previous) *cpe:2.3:o:apple:apple_tv:9.2:*:*:*:*:*:*:* (and previous) *cpe:2.3:o:apple:iphone_os:9.3.1:*:*:*:*:*:*:* (and previous)
    Added CVSS V2 (AV:N/AC:M/Au:N/C:P/I:P/A:P)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Changed Reference Type https://support.apple.com/HT206566 No Types Assigned https://support.apple.com/HT206566 Advisory
    Changed Reference Type https://support.apple.com/HT206568 No Types Assigned https://support.apple.com/HT206568 Advisory
    Changed Reference Type https://support.apple.com/HT206567 No Types Assigned https://support.apple.com/HT206567 Advisory
    Changed Reference Type http://lists.apple.com/archives/security-announce/2016/May/msg00003.html No Types Assigned http://lists.apple.com/archives/security-announce/2016/May/msg00003.html Advisory
    Changed Reference Type https://support.apple.com/HT206564 No Types Assigned https://support.apple.com/HT206564 Advisory
    Changed Reference Type http://lists.apple.com/archives/security-announce/2016/May/msg00001.html No Types Assigned http://lists.apple.com/archives/security-announce/2016/May/msg00001.html Advisory
    Changed Reference Type http://lists.apple.com/archives/security-announce/2016/May/msg00002.html No Types Assigned http://lists.apple.com/archives/security-announce/2016/May/msg00002.html Advisory
    Changed Reference Type http://lists.apple.com/archives/security-announce/2016/May/msg00004.html No Types Assigned http://lists.apple.com/archives/security-announce/2016/May/msg00004.html Advisory
    Added CWE CWE-119
  • Initial Analysis by [email protected]

    May. 20, 2016

    Action Type Old Value New Value
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.
Exploit Prediction

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

0.37 }} 0.03%

score

0.69781

percentile

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