Out-of-bounds Write Affecting perl package, versions <5.36.0-7+deb12u2


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.04% (11th percentile)

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  • Snyk IDSNYK-DEBIAN12-PERL-9689899
  • published14 Apr 2025
  • disclosed13 Apr 2025

Introduced: 13 Apr 2025

NewCVE-2024-56406  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Debian:12 perl to version 5.36.0-7+deb12u2 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:12 relevant fixed versions and status.

A heap buffer overflow vulnerability was discovered in Perl.

Release branches 5.34, 5.36, 5.38 and 5.40 are affected, including development versions from 5.33.1 through 5.41.10.

When there are non-ASCII bytes in the left-hand-side of the tr operator, S_do_trans_invmap can overflow the destination pointer d.

   $ perl -e '$_ = "\x{FF}" x 1000000; tr/\xFF/\x{100}/;'    Segmentation fault (core dumped)

It is believed that this vulnerability can enable Denial of Service and possibly Code Execution attacks on platforms that lack sufficient defenses.

CVSS Base Scores

version 3.1