{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2023-36807", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2023-06-27T15:43:18.383Z", "datePublished": "2023-06-30T18:38:10.303Z", "dateUpdated": "2024-08-02T17:01:09.484Z"}, "containers": {"cna": {"title": "Infinite Loop when reading malformed objects in pypdf", "problemTypes": [{"descriptions": [{"cweId": "CWE-835", "lang": "en", "description": "CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/py-pdf/pypdf/security/advisories/GHSA-hm9v-vj3r-r55m", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/py-pdf/pypdf/security/advisories/GHSA-hm9v-vj3r-r55m"}, {"name": "https://github.com/py-pdf/pypdf/issues/1329", "tags": ["x_refsource_MISC"], "url": "https://github.com/py-pdf/pypdf/issues/1329"}, {"name": "https://github.com/py-pdf/pypdf/pull/1331", "tags": ["x_refsource_MISC"], "url": "https://github.com/py-pdf/pypdf/pull/1331"}], "affected": [{"vendor": "py-pdf", "product": "pypdf", "versions": [{"version": "2.10.5", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2023-06-30T18:38:10.303Z"}, "descriptions": [{"lang": "en", "value": "pypdf is a pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files. In version 2.10.5 an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This infinite loop blocks the current process and can utilize a single core of the CPU by 100%. It does not affect memory usage. That is, for example, the case if the user extracted metadata from such a malformed PDF. Versions prior to 2.10.5 throw an error, but do not hang forever. This issue was fixed with https://github.com/py-pdf/pypdf/pull/1331 which has been included in release 2.10.6. Users are advised to upgrade. Users unable to upgrade should modify `PyPDF2/generic/_data_structures.py::read_object` to an an error throwing case. See GHSA-hm9v-vj3r-r55m for details. "}], "source": {"advisory": "GHSA-hm9v-vj3r-r55m", "discovery": "UNKNOWN"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T17:01:09.484Z"}, "title": "CVE Program Container", "references": [{"name": "https://github.com/py-pdf/pypdf/security/advisories/GHSA-hm9v-vj3r-r55m", "tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/py-pdf/pypdf/security/advisories/GHSA-hm9v-vj3r-r55m"}, {"name": "https://github.com/py-pdf/pypdf/issues/1329", "tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/py-pdf/pypdf/issues/1329"}, {"name": "https://github.com/py-pdf/pypdf/pull/1331", "tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/py-pdf/pypdf/pull/1331"}]}]}}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:pypdf_project:pypdf:2.10.5:*:*:*:*:*:*:*", "matchCriteriaId": "8BD8B7BF-3DD0-4276-9DB5-C0E222DFD085", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "pypdf is a pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files. In version 2.10.5 an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This infinite loop blocks the current process and can utilize a single core of the CPU by 100%. It does not affect memory usage. That is, for example, the case if the user extracted metadata from such a malformed PDF. Versions prior to 2.10.5 throw an error, but do not hang forever. This issue was fixed with https://github.com/py-pdf/pypdf/pull/1331 which has been included in release 2.10.6. Users are advised to upgrade. Users unable to upgrade should modify `PyPDF2/generic/_data_structures.py::read_object` to an an error throwing case. See GHSA-hm9v-vj3r-r55m for details. "}], "id": "CVE-2023-36807", "lastModified": "2023-07-10T16:32:45.017", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2023-06-30T19:15:09.283", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "url": "https://github.com/py-pdf/pypdf/issues/1329"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/py-pdf/pypdf/pull/1331"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Mitigation", "Patch", "Vendor Advisory"], "url": "https://github.com/py-pdf/pypdf/security/advisories/GHSA-hm9v-vj3r-r55m"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-835"}], "source": "security-advisories@github.com", "type": "Primary"}]}

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