CVE-2023-6246
Published: 31 January 2024
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.
Notes
| Author | Note |
|---|---|
| mdeslaur | introduced by: https://sourceware.org/git/?p=glibc.git;a=commit;h=52a5be0df411ef3ff45c10c7c308cb92993d15b1 in glibc 3.36 |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
eglibc Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| focal |
Does not exist
|
|
| jammy |
Does not exist
|
|
| mantic |
Does not exist
|
|
| trusty |
Not vulnerable
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
|
|
glibc Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
|
| focal |
Not vulnerable
(2.31-0ubuntu9.14)
|
|
| jammy |
Not vulnerable
(2.35-0ubuntu3.6)
|
|
| mantic |
Released
(2.38-1ubuntu6.1)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(2.37-15)
|
|
| xenial |
Not vulnerable
|
|
|
Patches: upstream: https://sourceware.org/git/?p=glibc.git;a=commit;h=6bd0e4efcc78f3c0115e5ea9739a1642807450da |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |