CVE-2023-6779

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.

References

https://www.bleepingcomputer.com/news/security/new-linux-glibc-flaw-lets-attackers-get-root-on-major-distros/

https://www.openwall.com/lists/oss-security/2024/01/30/6

https://security.netapp.com/advisory/ntap-20240223-0006/

https://security.gentoo.org/glsa/202402-01

https://lists.fedoraproject.org/archives/list/[email protected]/message/MWQ6BZJ6CV5UAW4VZSKJ6TO4KIW2KWAQ/

https://lists.fedoraproject.org/archives/list/[email protected]/message/D2FIH77VHY3KCRROCXOT6L27WMZXSJ2G/

https://bugzilla.redhat.com/show_bug.cgi?id=2254395

https://access.redhat.com/security/cve/CVE-2023-6779

http://seclists.org/fulldisclosure/2024/Feb/3

http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3