CVEvulnerability
CVE-2024-56406
8.4 HIGH
Official page ↗
- Status
- Modified
- Published
- 2025-04-13
- Last modified
- 2026-06-17
- Assigner
- 9b29abf9-4ab0-4765-b253-1875cd9b441e
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 8.4 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-122, CWE-787
Description
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.
Affected configurations
• perl perl (>= 5.33.1 < 5.38.4)
• perl perl (>= 5.39.0 < 5.40.2)
• perl perl (>= 5.41.0 <= 5.41.10)
Related
References
- https://github.com/Perl/perl5/commit/87f42aa0e0096e9a346c9672aa3a0bd3bef8c1dd.patch Patch
- https://metacpan.org/release/SHAY/perl-5.38.4/changes Release Notes
- https://metacpan.org/release/SHAY/perl-5.40.2/changes Release Notes
- http://www.openwall.com/lists/oss-security/2025/04/13/3 Mailing List
- http://www.openwall.com/lists/oss-security/2025/04/13/4 Mailing List
- http://www.openwall.com/lists/oss-security/2025/04/13/5 Mailing List