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Out-of-bounds Write Affecting sudo package, versions <1.8.9p5-1ubuntu1.5+esm3

low

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    Exploit Maturity Mature
    EPSS 0.18% (56th 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-UBUNTU1404-SUDO-546522
  • published 30 Jan 2020
  • disclosed 29 Jan 2020
Report a new vulnerability Found a mistake?

Introduced: 29 Jan 2020

CVE-2019-18634 Open this link in a new tab
CWE-787 Open this link in a new tab

How to fix?

Upgrade Ubuntu:14.04 sudo to version 1.8.9p5-1ubuntu1.5+esm3 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 Ubuntu. See How to fix? for Ubuntu:14.04 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