{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2024-56406",
        "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "state": "PUBLISHED",
        "assignerShortName": "CPANSec",
        "dateReserved": "2024-12-23T02:07:38.152Z",
        "datePublished": "2025-04-13T13:16:09.841Z",
        "dateUpdated": "2025-10-16T14:04:20.393Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "collectionURL": "https://cpan.org/modules",
                    "defaultStatus": "unaffected",
                    "packageName": "perl",
                    "product": "perl",
                    "programFiles": [
                        "op.c"
                    ],
                    "programRoutines": [
                        {
                            "name": "S_pmtrans"
                        },
                        {
                            "name": "tr"
                        }
                    ],
                    "repo": "https://github.com/Perl/perl5/",
                    "vendor": "perl",
                    "versions": [
                        {
                            "lessThanOrEqual": "5.41.10",
                            "status": "affected",
                            "version": "5.41.0",
                            "versionType": "custom"
                        },
                        {
                            "lessThan": "5.40.2-RC1",
                            "status": "affected",
                            "version": "5.39.0",
                            "versionType": "custom"
                        },
                        {
                            "lessThan": "5.38.4-RC1",
                            "status": "affected",
                            "version": "5.33.1",
                            "versionType": "custom"
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                    ]
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "type": "finder",
                    "value": "Nathan Mills"
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "supportingMedia": [
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                            "value": "A heap buffer overflow vulnerability was discovered in Perl. <br><br>Release branches 5.34, 5.36, 5.38 and 5.40 are affected, including development versions from 5.33.1 through 5.41.10.<br><br>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`.<br><br><tt>&nbsp; &nbsp;$ perl -e '$_ = \"\\x{FF}\" x 1000000; tr/\\xFF/\\x{100}/;' <br>&nbsp; &nbsp;Segmentation fault (core dumped)</tt><br><br>It is believed that this vulnerability can enable Denial of Service and possibly Code Execution attacks on platforms that lack sufficient defenses.<br><br>"
                        }
                    ],
                    "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   $ perl -e '$_ = \"\\x{FF}\" x 1000000; tr/\\xFF/\\x{100}/;' \n   Segmentation 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."
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-122",
                            "description": "CWE-122 Heap-based Buffer Overflow",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-787",
                            "description": "CWE-787 Out-of-bounds Write",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
                "shortName": "CPANSec",
                "dateUpdated": "2025-04-13T19:29:56.569Z"
            },
            "references": [
                {
                    "tags": [
                        "patch"
                    ],
                    "url": "https://github.com/Perl/perl5/commit/87f42aa0e0096e9a346c9672aa3a0bd3bef8c1dd.patch"
                },
                {
                    "tags": [
                        "release-notes"
                    ],
                    "url": "https://metacpan.org/release/SHAY/perl-5.38.4/changes"
                },
                {
                    "tags": [
                        "release-notes"
                    ],
                    "url": "https://metacpan.org/release/SHAY/perl-5.40.2/changes"
                }
            ],
            "solutions": [
                {
                    "lang": "en",
                    "supportingMedia": [
                        {
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                            "type": "text/html",
                            "value": "Users should update perl to 5.40.2 or 5.38.4, or apply the upstream patch provided in the References section.<br><br>"
                        }
                    ],
                    "value": "Users should update perl to 5.40.2 or 5.38.4, or apply the upstream patch provided in the References section."
                }
            ],
            "source": {
                "discovery": "UNKNOWN"
            },
            "title": "Perl is vulnerable to a heap buffer overflow when transliterating non-ASCII bytes",
            "x_generator": {
                "engine": "Vulnogram 0.2.0"
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        },
        "adp": [
            {
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "http://www.openwall.com/lists/oss-security/2025/04/13/3"
                    },
                    {
                        "url": "http://www.openwall.com/lists/oss-security/2025/04/13/4"
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                    "dateUpdated": "2025-04-13T22:02:35.643Z"
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            {
                "metrics": [
                    {
                        "cvssV3_1": {
                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 8.4,
                            "attackVector": "LOCAL",
                            "baseSeverity": "HIGH",
                            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                            "integrityImpact": "HIGH",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "HIGH",
                            "privilegesRequired": "NONE",
                            "confidentialityImpact": "HIGH"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2025-10-16T14:04:16.993103Z",
                                "id": "CVE-2024-56406",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
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                                    {
                                        "Technical Impact": "total"
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                                "role": "CISA Coordinator",
                                "version": "2.0.3"
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                ],
                "title": "CISA ADP Vulnrichment",
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                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2025-10-16T14:04:20.393Z"
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