github - ghsa-p6jf-pv8c-623c

GHSA-P6JF-PV8C-623C

Vulnerability from github – Published: 2025-04-13 15:30 – Updated: 2025-10-16 15:30

Details

A heap buffer overflow vulnerability was discovered in Perl.

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.

Severity ?

8.6 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

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  "affected": [],
  "aliases": [
    "CVE-2024-56406"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-122",
      "CWE-787"
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-04-13T14:15:14Z",
    "severity": "HIGH"
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  "details": "A heap buffer overflow vulnerability was discovered in Perl. \n\nWhen there are non-ASCII bytes in the left-hand-side of the `tr` operator, `S_do_trans_invmap` can overflow the destination pointer `d`.\n\n\u00a0 \u00a0$ perl -e \u0027$_ = \"\\x{FF}\" x 1000000; tr/\\xFF/\\x{100}/;\u0027 \n\u00a0 \u00a0Segmentation fault (core dumped)\n\nIt is believed that this vulnerability can enable Denial of Service and possibly Code Execution attacks on platforms that lack sufficient defenses.",
  "id": "GHSA-p6jf-pv8c-623c",
  "modified": "2025-10-16T15:30:26Z",
  "published": "2025-04-13T15:30:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-56406"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Perl/perl5/commit/87f42aa0e0096e9a346c9672aa3a0bd3bef8c1dd.patch"
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      "type": "WEB",
      "url": "https://metacpan.org/release/SHAY/perl-5.38.4/changes"
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    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2025/04/13/3"
    },
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      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2025/04/13/4"
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      "type": "CVSS_V3"
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  ]
}

CVE-2024-56406 (GCVE-0-2024-56406)

Vulnerability from cvelistv5 – Published: 2025-04-13 13:16 – Updated: 2025-10-16 14:04

Summary

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.

Severity ?

8.4 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-122 - Heap-based Buffer Overflow
CWE-787 - Out-of-bounds Write

Assigner

CPANSec

References

URL

Tags

	https://github.com/Perl/perl5/commit/87f42aa0e009…	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

Impacted products

	Vendor	Product	Version
	perl	perl	Affected: 5.41.0 , ≤ 5.41.10 (custom) Affected: 5.39.0 , < 5.40.2-RC1 (custom) Affected: 5.33.1 , < 5.38.4-RC1 (custom)

Credits

Nathan Mills

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-P6JF-PV8C-623C

CVE-2024-56406 (GCVE-0-2024-56406)

Tags

Sightings

Nomenclature