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.
A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value.
| Link | Tags |
|---|---|
| https://www.openwall.com/lists/oss-security/2022/01/24/4 | mailing list third party advisory exploit |
| https://sourceware.org/bugzilla/show_bug.cgi?id=28769 | third party advisory issue tracking |
| https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=23e0e8f5f1fb5ed150253d986ecccdc90c2dcd5e | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2024637 | third party advisory issue tracking |
| https://access.redhat.com/security/cve/CVE-2021-3999 | third party advisory |
| https://security-tracker.debian.org/tracker/CVE-2021-3999 | third party advisory |
| https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html | third party advisory mailing list |
| https://security.netapp.com/advisory/ntap-20221104-0001/ | third party advisory |