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Link Following Affecting sudo package, versions *

low

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.1% (40th percentile)
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NVD
7.8 high
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Red Hat
7.8 high
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SUSE
7.8 high

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  • Snyk ID SNYK-DEBIAN9-SUDO-1059000
  • published 12 Jan 2021
  • disclosed 12 Jan 2021
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Introduced: 12 Jan 2021

CVE-2021-23240 Open this link in a new tab
CWE-59 Open this link in a new tab

How to fix?

There is no fixed version for Debian:9 sudo.

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:9 relevant fixed versions and status.

selinux_edit_copy_tfiles in sudoedit in Sudo before 1.9.5 allows a local unprivileged user to gain file ownership and escalate privileges by replacing a temporary file with a symlink to an arbitrary file target. This affects SELinux RBAC support in permissive mode. Machines without SELinux are not vulnerable.

References