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Untrusted Search Path Affecting perl package, versions <5.32.1-5

0.0
high

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.09% (38th percentile)
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NVD
7.8 high
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Red Hat
7.8 high

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  • Snyk ID SNYK-DEBIANUNSTABLE-PERL-1537853
  • published 10 Aug 2021
  • disclosed 11 Aug 2021
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Introduced: 10 Aug 2021

CVE-2021-36770 Open this link in a new tab
CWE-426 Open this link in a new tab

How to fix?

Upgrade Debian:unstable perl to version 5.32.1-5 or higher.

NVD Description

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

Encode.pm, as distributed in Perl through 5.34.0, allows local users to gain privileges via a Trojan horse Encode::ConfigLocal library (in the current working directory) that preempts dynamic module loading. Exploitation requires an unusual configuration, and certain 2021 versions of Encode.pm (3.05 through 3.11). This issue occurs because the || operator evaluates @INC in a scalar context, and thus @INC has only an integer value.

References