CVE-2023-34256
Apache Linux crc16 Out-of-Bounds Read
Description
An issue was discovered in the Linux kernel before 6.3.3. There is an out-of-bounds read in crc16 in lib/crc16.c when called from fs/ext4/super.c because ext4_group_desc_csum does not properly check an offset. NOTE: this is disputed by third parties because the kernel is not intended to defend against attackers with the stated "When modifying the block device while it is mounted by the filesystem" access.
INFO
Published Date :
May 31, 2023, 8:15 p.m.
Last Modified :
Aug. 2, 2024, 4:16 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2023-34256 has a 1 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-2023-34256
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-2023-34256.
| URL | Resource |
|---|---|
| https://bugzilla.suse.com/show_bug.cgi?id=1211895 | Issue Tracking Patch Third Party Advisory |
| https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.3 | Mailing List Patch |
| https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f04351888a83e595571de672e0a4a8b74f4fb31 | Mailing List Patch |
| https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html | Mailing List Third Party Advisory |
| https://syzkaller.appspot.com/bug?extid=8785e41224a3afd04321 | Mailing List Patch |
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).
Got a bogus CVE someone got for a non-vuln? Please share here!
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-34256 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-34256 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]
Aug. 02, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
May. 17, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Apr. 11, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Mar. 21, 2024
Action Type Old Value New Value Added Tag MITRE disputed -
Modified Analysis by [email protected]
Nov. 15, 2023
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html No Types Assigned https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html Mailing List, Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html No Types Assigned https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Changed Description ** DISPUTED ** An issue was discovered in the Linux kernel before 6.3.3. There is an out-of-bounds read in crc16 in lib/crc16.c when called from fs/ext4/super.c because ext4_group_desc_csum does not properly check an offset. NOTE: this is disputed by third parties because the kernel is not intended to defend against attackers with the stated "When modifying the block device while it is mounted by the filesystem" access. An issue was discovered in the Linux kernel before 6.3.3. There is an out-of-bounds read in crc16 in lib/crc16.c when called from fs/ext4/super.c because ext4_group_desc_csum does not properly check an offset. NOTE: this is disputed by third parties because the kernel is not intended to defend against attackers with the stated "When modifying the block device while it is mounted by the filesystem" access. -
CVE Modified by [email protected]
Oct. 20, 2023
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html [No Types Assigned] -
CVE Modified by [email protected]
Jul. 27, 2023
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html [No Types Assigned] -
Initial Analysis by [email protected]
Jun. 07, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://bugzilla.suse.com/show_bug.cgi?id=1211895 No Types Assigned https://bugzilla.suse.com/show_bug.cgi?id=1211895 Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.3 No Types Assigned https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.3 Mailing List, Patch Changed Reference Type https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f04351888a83e595571de672e0a4a8b74f4fb31 No Types Assigned https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4f04351888a83e595571de672e0a4a8b74f4fb31 Mailing List, Patch Changed Reference Type https://syzkaller.appspot.com/bug?extid=8785e41224a3afd04321 No Types Assigned https://syzkaller.appspot.com/bug?extid=8785e41224a3afd04321 Mailing List, Patch Added CWE NIST CWE-125 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 6.3.3 Added CPE Configuration OR *cpe:2.3:o:suse:linux_enterprise:12.0:sp5:*:*:*:*:*:* *cpe:2.3:o:suse:linux_enterprise:15.0:sp4:*:*:*:*:*:* *cpe:2.3:o:suse:linux_enterprise:15.0:sp5:*:*:*:*:*:* -
CVE Modified by [email protected]
Jun. 05, 2023
Action Type Old Value New Value Changed Description An issue was discovered in the Linux kernel before 6.3.3. There is an out-of-bounds read in crc16 in lib/crc16.c when called from fs/ext4/super.c because ext4_group_desc_csum does not properly check an offset. ** DISPUTED ** An issue was discovered in the Linux kernel before 6.3.3. There is an out-of-bounds read in crc16 in lib/crc16.c when called from fs/ext4/super.c because ext4_group_desc_csum does not properly check an offset. NOTE: this is disputed by third parties because the kernel is not intended to defend against attackers with the stated "When modifying the block device while it is mounted by the filesystem" access. Added Reference https://bugzilla.suse.com/show_bug.cgi?id=1211895 [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-2023-34256 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-2023-34256
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} 0.00%
score
0.14825
percentile