Vulnerabilities > CVE-2023-6779 - Out-of-bounds Write vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
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.
Vulnerable Configurations
Part | Description | Count |
---|---|---|
Application | 2 | |
OS | 2 |
Common Weakness Enumeration (CWE)
References
- https://access.redhat.com/security/cve/CVE-2023-6779
- https://bugzilla.redhat.com/show_bug.cgi?id=2254395
- https://www.openwall.com/lists/oss-security/2024/01/30/6
- http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html
- https://lists.fedoraproject.org/archives/list/[email protected]/message/D2FIH77VHY3KCRROCXOT6L27WMZXSJ2G/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/MWQ6BZJ6CV5UAW4VZSKJ6TO4KIW2KWAQ/
- https://security.gentoo.org/glsa/202402-01
- http://seclists.org/fulldisclosure/2024/Feb/3
- https://www.qualys.com/2024/01/30/cve-2023-6246/syslog.txt
- https://security.netapp.com/advisory/ntap-20240223-0006/