A flaw was found in glibc. An off-by-one buffer overflow...
Vulnerability Description
A flaw was found in glibc. An off-by-one buffer overflow and underflow in getcwd() may lead to memory corruption when the size of the buffer is exactly 1. A local attacker who can control the input buffer and size passed to getcwd() in a setuid program could use this flaw to potentially execute arbitrary code and escalate their privileges on the system.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://www.openwall.com/lists/oss-security/2022/01/24/4
- https://sourceware.org/bugzilla/show_bug.cgi?id=28769
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=23e0e8f5f1fb5ed150253d986ecccdc90c2dcd5e
- https://bugzilla.redhat.com/show_bug.cgi?id=2024637
- https://access.redhat.com/security/cve/CVE-2021-3999
- https://security-tracker.debian.org/tracker/CVE-2021-3999
- https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html
- https://security.netapp.com/advisory/ntap-20221104-0001/
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MITRE ATT&CK TTPs
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