Detections
Analytics
CVE-2023-6246
high
Description
A 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 the openlog function was not called, or called with the ident argument set to NULL, and the program name (the basename of argv[0]) is bigger than 1024 bytes, resulting in an application crash or local privilege escalation. This issue affects glibc 2.36 and newer.
References
https://github.com/sayhi13/CVE-explanations
https://github.com/SimoesCTT/CTT-Vsyslog-Vortex-CVE-2023-6246
https://www.openwall.com/lists/oss-security/2024/01/30/6
https://security.netapp.com/advisory/ntap-20240216-0007/
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
http://seclists.org/fulldisclosure/2024/Feb/5
http://seclists.org/fulldisclosure/2024/Feb/3
http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html
http://packetstormsecurity.com/files/176931/glibc-qsort-Out-Of-Bounds-Read-Write.html
Details
Published: 2024-01-31
Updated: 2026-05-12
Risk Information
CVSS v2
Base Score: 6.8
Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C
Severity: Medium
CVSS v3
Base Score: 7.8
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Severity: High
EPSS
EPSS: 0.04794
Vulnerability Watch
Tenable Research has classified this CVE under the following Vulnerability Watch classification, which includes active and historical (inactive) classifications. You can learn more about these classifications on our blog.
Vulnerability Being Monitored