8.4
High
CVE-2023-6246 A heap-based buffer overflow was found in the __vsyslog_internal function of the glibc library
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| glibc 2.39 | earliest → < 2.39 | 2.39 |
| Red Hat Enterprise Linux 6 | Versions not published | |
| Red Hat Enterprise Linux 7 | Versions not published | |
| Red Hat Enterprise Linux 8 | Versions not published | |
| Red Hat Enterprise Linux 9 | Versions not published | |
| Fedora | Versions not published | |
| SIMATIC S7-1500 CPU 1518-4 PN/DP MFP 3.1 | 3.1.5 → latest | No fix stated |
| SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP 3.1 | 3.1.5 → latest | No fix stated |
| SIPLUS S7-1500 CPU 1518-4 PN/DP MFP 3.1 | 3.1.5 → latest | No fix stated |
Other CVEs of glibc
The 5 CVEs of glibc →
CVE-2023-6780
An integer overflow was found in the __vsyslog_internal function of the glibc library
5.3
Medium
CVE-2023-6779
An off-by-one heap-based buffer overflow was found in the __vsyslog_internal function of the glibc library
8.2
High
CVE-2021-3999
A flaw was found in glibc
7.8
High
CVE-2021-3998
A flaw was found in glibc
7.5
High