CVE-2021-27363
Linux Kernel ISCSI Transport Pointer Leak
Description
An issue was discovered in the Linux kernel through 5.11.3. A kernel pointer leak can be used to determine the address of the iscsi_transport structure. When an iSCSI transport is registered with the iSCSI subsystem, the transport's handle is available to unprivileged users via the sysfs file system, at /sys/class/iscsi_transport/$TRANSPORT_NAME/handle. When read, the show_transport_handle function (in drivers/scsi/scsi_transport_iscsi.c) is called, which leaks the handle. This handle is actually the pointer to an iscsi_transport struct in the kernel module's global variables.
INFO
Published Date :
March 7, 2021, 4:15 a.m.
Last Modified :
May 23, 2022, 4 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
2.5
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2021-27363 has a 6 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-2021-27363
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.
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-2021-27363.
| URL | Resource |
|---|---|
| http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html | Third Party Advisory VDB Entry |
| http://www.openwall.com/lists/oss-security/2021/03/06/1 | Mailing List Patch Third Party Advisory |
| https://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.html | Exploit Third Party Advisory |
| https://bugzilla.suse.com/show_bug.cgi?id=1182716 | Issue Tracking Third Party Advisory |
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=688e8128b7a92df982709a4137ea4588d16f24aa | Mailing List Patch Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html | Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20210409-0001/ | 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).
None
工具书单
Perl Shell
Map Vulnerabilities into Different Layers of the Container Image
Python
None
kernel-4.4.167expSEHDsec
Shell Roff
A collection of links related to Linux kernel security and exploitation
linux-kernel kernel-exploitation exploit privilege-escalation security
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-27363 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-27363 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]
May. 23, 2022
Action Type Old Value New Value Changed Reference Type http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html No Types Assigned http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html Third Party Advisory, VDB Entry Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html Third Party Advisory Changed Reference Type https://security.netapp.com/advisory/ntap-20210409-0001/ No Types Assigned https://security.netapp.com/advisory/ntap-20210409-0001/ Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* *cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Apr. 09, 2021
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20210409-0001/ [No Types Assigned] -
CVE Modified by [email protected]
Apr. 08, 2021
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html [No Types Assigned] -
CVE Modified by [email protected]
Mar. 31, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/03/msg00035.html [No Types Assigned] -
Modified Analysis by [email protected]
Mar. 25, 2021
Action Type Old Value New Value Changed Reference Type https://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.html No Types Assigned https://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.html Exploit, Third Party Advisory -
CVE Modified by [email protected]
Mar. 21, 2021
Action Type Old Value New Value Added Reference https://blog.grimm-co.com/2021/03/new-old-bugs-in-linux-kernel.html [No Types Assigned] -
Initial Analysis by [email protected]
Mar. 15, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:N/A:P) Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L Changed Reference Type http://www.openwall.com/lists/oss-security/2021/03/06/1 No Types Assigned http://www.openwall.com/lists/oss-security/2021/03/06/1 Mailing List, Patch, Third Party Advisory Changed Reference Type https://bugzilla.suse.com/show_bug.cgi?id=1182716 No Types Assigned https://bugzilla.suse.com/show_bug.cgi?id=1182716 Issue Tracking, Third Party Advisory Changed Reference Type https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=688e8128b7a92df982709a4137ea4588d16f24aa No Types Assigned https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=688e8128b7a92df982709a4137ea4588d16f24aa Mailing List, Patch, Vendor Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html Mailing List, Third Party Advisory Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (including) 5.11.3 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Mar. 09, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-27363 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-2021-27363
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.00%
score
0.23496
percentile