Rapid7 Vulnerability & Exploit Database

Alma Linux: CVE-2021-3999: Moderate: glibc security update (ALSA-2022-0896)

Back to Search

Alma Linux: CVE-2021-3999: Moderate: glibc security update (ALSA-2022-0896)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
03/15/2022
Created
05/05/2022
Added
05/04/2022
Modified
05/13/2022

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.

Solution(s)

  • alma-upgrade-compat-libpthread-nonshared
  • alma-upgrade-glibc-benchtests
  • alma-upgrade-glibc-nss-devel
  • alma-upgrade-glibc-static
  • alma-upgrade-glibc-utils
  • alma-upgrade-nss_hesiod

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;