Stack-based Buffer Overflow Affecting sudo package, versions <0:1.8.25p1-8.el8_1.1


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating.

Threat Intelligence

Exploit Maturity
Mature
EPSS
0.18% (57th percentile)

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  • Snyk IDSNYK-CENTOS8-SUDO-2022340
  • published26 Jul 2021
  • disclosed30 Jan 2020

Introduced: 30 Jan 2020

CVE-2019-18634  (opens in a new tab)
CWE-121  (opens in a new tab)

How to fix?

Upgrade Centos:8 sudo to version 0:1.8.25p1-8.el8_1.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream sudo package and not the sudo package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

In Sudo before 1.8.26, if pwfeedback is enabled in /etc/sudoers, users can trigger a stack-based buffer overflow in the privileged sudo process. (pwfeedback is a default setting in Linux Mint and elementary OS; however, it is NOT the default for upstream and many other packages, and would exist only if enabled by an administrator.) The attacker needs to deliver a long string to the stdin of getln() in tgetpass.c.

References

CVSS Scores

version 3.1