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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:perl:perl:*:*:*:*:*:*:*:*", "matchCriteriaId": "F34096A4-1439-4582-8133-8134388418D1", "versionEndExcluding": "5.38.4", "versionStartIncluding": "5.33.1", "vulnerable": true}, {"criteria": "cpe:2.3:a:perl:perl:*:*:*:*:*:*:*:*", "matchCriteriaId": "91EF91EF-222F-42C0-A506-0A57B98F1DA5", "versionEndExcluding": "5.40.2", "versionStartIncluding": "5.39.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:perl:perl:*:*:*:*:*:*:*:*", "matchCriteriaId": "87807B8D-271E-4B95-ADBC-2383FBD07335", "versionEndIncluding": "5.41.10", "versionStartIncluding": "5.41.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A heap buffer overflow vulnerability was discovered in Perl. \n\nRelease branches 5.34, 5.36, 5.38 and 5.40 are affected, including development versions from 5.33.1 through 5.41.10.\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 '$_ = \"\\x{FF}\" x 1000000; tr/\\xFF/\\x{100}/;' \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."}, {"lang": "es", "value": "Se descubri\u00f3 una vulnerabilidad de desbordamiento del b\u00fafer de mont\u00f3n en Perl. Las versiones 5.34, 5.36, 5.38 y 5.40 se ven afectadas, incluyendo las versiones de desarrollo de la 5.33.1 a la 5.41.10. Cuando hay bytes no ASCII en el lado izquierdo del operador `tr`, `S_do_trans_invmap` puede desbordar el puntero de destino `d`. $ perl -e '$_ = \"\\x{FF}\" x 1000000; tr/\\xFF/\\x{100}/;' Fallo de segmentaci\u00f3n (volcado de n\u00facleo). Se cree que esta vulnerabilidad puede permitir ataques de denegaci\u00f3n de servicio y, posiblemente, de ejecuci\u00f3n de c\u00f3digo en plataformas que carecen de defensas suficientes."}], "id": "CVE-2024-56406", "lastModified": "2025-10-16T14:15:34.083", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2025-04-13T14:15:14.527", "references": [{"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "tags": ["Patch"], "url": "https://github.com/Perl/perl5/commit/87f42aa0e0096e9a346c9672aa3a0bd3bef8c1dd.patch"}, {"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "tags": ["Release Notes"], "url": "https://metacpan.org/release/SHAY/perl-5.38.4/changes"}, {"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "tags": ["Release Notes"], "url": "https://metacpan.org/release/SHAY/perl-5.40.2/changes"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "http://www.openwall.com/lists/oss-security/2025/04/13/3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "http://www.openwall.com/lists/oss-security/2025/04/13/4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "http://www.openwall.com/lists/oss-security/2025/04/13/5"}], "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-122"}, {"lang": "en", "value": "CWE-787"}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2025:7500", "cpe": "cpe:/o:redhat:enterprise_linux:10.0", "package": "perl-4:5.40.2-512.1.el10_0", "product_name": "Red Hat Enterprise Linux 10", "release_date": "2025-05-13T00:00:00Z"}], "bugzilla": {"description": "perl: Perl 5.34, 5.36, 5.38 and 5.40 are vulnerable to a heap buffer overflow when transliterating non-ASCII bytes", "id": "2359290", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2359290"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.3", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H", "status": "verified"}, "cwe": "(CWE-122|CWE-787)", "details": ["A heap buffer overflow vulnerability was discovered in Perl. \nRelease branches 5.34, 5.36, 5.38 and 5.40 are affected, including development versions from 5.33.1 through 5.41.10.\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\u00a0 \u00a0$ perl -e '$_ = \"\\x{FF}\" x 1000000; tr/\\xFF/\\x{100}/;' \n\u00a0 \u00a0Segmentation fault (core dumped)\nIt is believed that this vulnerability can enable Denial of Service and possibly Code Execution attacks on platforms that lack sufficient defenses.", "A flaw was found in Perl. This vulnerability allows a heap buffer overflow, which can lead to denial of service and potential arbitrary code execution on platforms that lack sufficient defenses via specially crafted input to the tr/// transliteration operator containing non-ASCII bytes on the left-hand side."], "name": "CVE-2024-56406", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "perl", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "perl", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "perl", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "perl:5.32/perl", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "perl", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2025-04-13T13:16:09Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-56406\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-56406\nhttps://github.com/Perl/perl5/commit/87f42aa0e0096e9a346c9672aa3a0bd3bef8c1dd.patch\nhttps://metacpan.org/release/SHAY/perl-5.38.4/changes\nhttps://metacpan.org/release/SHAY/perl-5.40.2/changes"], "statement": "This vulnerability is rated as an Important vulnerability because a heap buffer overflow vulnerability exists in the tr/// operator causing DoS and arbitrary code execution, which can disrupt system services, background system jobs.", "threat_severity": "Important"}

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