CVE-2021-3999
7.8HIGHA 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 bu
Published: 8/24/2022Updated: 12/2/2025
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.
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Affected Products
gnuglibc
debiandebian_linux
10.0
debiandebian_linux
11.0
debiandebian_linux
10.0
netappe-series_performance_analyzer
-
netappnfs_plug-in
netappontap_select_deploy_administration_utility
-
netapph300s_firmware
-
netapph300s
-
netapph500s_firmware
-
netapph500s
-
netapph700s_firmware
-
netapph700s
-
netapph410s_firmware
-
netapph410s
-
netapph410c_firmware
-
netapph410c
-
References
- https://access.redhat.com/security/cve/CVE-2021-3999Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2024637Issue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00021.htmlMailing ListThird Party Advisory
- https://security-tracker.debian.org/tracker/CVE-2021-3999Third Party Advisory
- https://security.netapp.com/advisory/ntap-20221104-0001/Third Party Advisory
- https://sourceware.org/bugzilla/show_bug.cgi?id=28769Issue TrackingThird Party Advisory
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=23e0e8f5f1fb5ed150253d986ecccdc90c2dcd5e
- https://www.openwall.com/lists/oss-security/2022/01/24/4ExploitMailing ListThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2021-3999Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2024637Issue TrackingThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00021.htmlMailing ListThird Party Advisory
- https://security-tracker.debian.org/tracker/CVE-2021-3999Third Party Advisory
- https://security.netapp.com/advisory/ntap-20221104-0001/Third Party Advisory
- https://sourceware.org/bugzilla/show_bug.cgi?id=28769Issue TrackingThird Party Advisory
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=23e0e8f5f1fb5ed150253d986ecccdc90c2dcd5e
- https://www.openwall.com/lists/oss-security/2022/01/24/4ExploitMailing ListThird Party Advisory