Out-of-bounds Write Affecting sudo package, versions <1.8.27-1+deb10u2


0.0
high

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    Exploit Maturity Mature
    EPSS 0.18% (55th percentile)
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NVD
7.8 high
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SUSE
8.8 high
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Red Hat
7.8 high

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  • Snyk ID SNYK-DEBIAN10-SUDO-543805
  • published 30 Jan 2020
  • disclosed 29 Jan 2020

How to fix?

Upgrade Debian:10 sudo to version 1.8.27-1+deb10u2 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 Debian. See How to fix? for Debian:10 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