Out-of-bounds Write Affecting sudo-devel package, versions <0:1.8.23-4.amzn2.2


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

Exploit Maturity
Mature
EPSS
0.18% (57th percentile)

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  • Snyk IDSNYK-AMZN2-SUDODEVEL-1678726
  • published27 Sept 2021
  • disclosed29 Jan 2020

Introduced: 29 Jan 2020

CVE-2019-18634  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 sudo-devel to version 0:1.8.23-4.amzn2.2 or higher.
This issue was patched in ALAS2-2020-1404.

NVD Description

Note: Versions mentioned in the description apply only to the upstream sudo-devel package and not the sudo-devel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 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

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