CVE-2023-6779
glibc Heap-Based Buffer Overflow Vulnerability
Description
An off-by-one heap-based buffer overflow was found in the __vsyslog_internal function of the glibc library. This function is called by the syslog and vsyslog functions. This issue occurs when these functions are called with a message bigger than INT_MAX bytes, leading to an incorrect calculation of the buffer size to store the message, resulting in an application crash. This issue affects glibc 2.37 and newer.
INFO
Published Date :
Jan. 31, 2024, 2:15 p.m.
Last Modified :
Feb. 27, 2024, 5:26 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
4.2
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2023-6779 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2023-6779.
| URL | Resource |
|---|---|
| http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html | Exploit Third Party Advisory VDB Entry |
| http://seclists.org/fulldisclosure/2024/Feb/3 | Exploit Mailing List Third Party Advisory |
| https://access.redhat.com/security/cve/CVE-2023-6779 | Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2254395 | Issue Tracking |
| https://lists.fedoraproject.org/archives/list/[email protected]/message/D2FIH77VHY3KCRROCXOT6L27WMZXSJ2G/ | Mailing List |
| https://lists.fedoraproject.org/archives/list/[email protected]/message/MWQ6BZJ6CV5UAW4VZSKJ6TO4KIW2KWAQ/ | Mailing List |
| https://security.gentoo.org/glsa/202402-01 | Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20240223-0006/ | Third Party Advisory |
| https://www.openwall.com/lists/oss-security/2024/01/30/6 | Exploit Mailing List |
| https://www.qualys.com/2024/01/30/cve-2023-6246/syslog.txt | 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
Dockerfile Python HTML
None
Dockerfile Go
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-6779 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-6779 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]
Feb. 27, 2024
Action Type Old Value New Value Changed Reference Type https://security.netapp.com/advisory/ntap-20240223-0006/ No Types Assigned https://security.netapp.com/advisory/ntap-20240223-0006/ Third Party Advisory Changed Reference Type https://www.qualys.com/2024/01/30/cve-2023-6246/syslog.txt No Types Assigned https://www.qualys.com/2024/01/30/cve-2023-6246/syslog.txt Third Party Advisory Changed CPE Configuration OR *cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* versions up to (excluding) 2.39 OR *cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* versions from (including) 2.37 up to (excluding) 2.39 -
CVE Modified by [email protected]
Feb. 23, 2024
Action Type Old Value New Value Added Reference Red Hat, Inc. https://security.netapp.com/advisory/ntap-20240223-0006/ [No types assigned] -
CVE Modified by [email protected]
Feb. 15, 2024
Action Type Old Value New Value Added Reference Red Hat, Inc. https://www.qualys.com/2024/01/30/cve-2023-6246/syslog.txt [No types assigned] -
Initial Analysis by [email protected]
Feb. 09, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html No Types Assigned http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html Exploit, Third Party Advisory, VDB Entry Changed Reference Type http://seclists.org/fulldisclosure/2024/Feb/3 No Types Assigned http://seclists.org/fulldisclosure/2024/Feb/3 Exploit, Mailing List, Third Party Advisory Changed Reference Type https://access.redhat.com/security/cve/CVE-2023-6779 No Types Assigned https://access.redhat.com/security/cve/CVE-2023-6779 Third Party Advisory Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=2254395 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=2254395 Issue Tracking Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/D2FIH77VHY3KCRROCXOT6L27WMZXSJ2G/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/D2FIH77VHY3KCRROCXOT6L27WMZXSJ2G/ Mailing List Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/MWQ6BZJ6CV5UAW4VZSKJ6TO4KIW2KWAQ/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/MWQ6BZJ6CV5UAW4VZSKJ6TO4KIW2KWAQ/ Mailing List Changed Reference Type https://security.gentoo.org/glsa/202402-01 No Types Assigned https://security.gentoo.org/glsa/202402-01 Third Party Advisory Changed Reference Type https://www.openwall.com/lists/oss-security/2024/01/30/6 No Types Assigned https://www.openwall.com/lists/oss-security/2024/01/30/6 Exploit, Mailing List Added CWE NIST CWE-787 Added CPE Configuration OR *cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* versions up to (excluding) 2.39 Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Feb. 04, 2024
Action Type Old Value New Value Added Reference Red Hat, Inc. http://seclists.org/fulldisclosure/2024/Feb/3 [No types assigned] -
CVE Modified by [email protected]
Feb. 02, 2024
Action Type Old Value New Value Added Reference Red Hat, Inc. https://security.gentoo.org/glsa/202402-01 [No types assigned] -
CVE Modified by [email protected]
Feb. 01, 2024
Action Type Old Value New Value Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/D2FIH77VHY3KCRROCXOT6L27WMZXSJ2G/ [No types assigned] Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/MWQ6BZJ6CV5UAW4VZSKJ6TO4KIW2KWAQ/ [No types assigned] -
CVE Modified by [email protected]
Jan. 31, 2024
Action Type Old Value New Value Added Reference Red Hat, Inc. http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html [No types assigned] -
CVE Received by [email protected]
Jan. 31, 2024
Action Type Old Value New Value Added Description An off-by-one heap-based buffer overflow was found in the __vsyslog_internal function of the glibc library. This function is called by the syslog and vsyslog functions. This issue occurs when these functions are called with a message bigger than INT_MAX bytes, leading to an incorrect calculation of the buffer size to store the message, resulting in an application crash. This issue affects glibc 2.37 and newer. Added Reference Red Hat, Inc. https://access.redhat.com/security/cve/CVE-2023-6779 [No types assigned] Added Reference Red Hat, Inc. https://bugzilla.redhat.com/show_bug.cgi?id=2254395 [No types assigned] Added Reference Red Hat, Inc. https://www.openwall.com/lists/oss-security/2024/01/30/6 [No types assigned] Added CWE Red Hat, Inc. CWE-122 Added CVSS V3.1 Red Hat, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-6779 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-2023-6779
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.14 }} 0.04%
score
0.48874
percentile