CVE-2025-64503

{"id": "CVE-2025-64503", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.0, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 2.5}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 3.3, "attackVector": "LOCAL", "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 1.8}]}, "published": "2025-11-12T22:15:50.293", "references": [{"url": "https://github.com/OpenPrinting/cups-filters/blob/aea8d0db017e495b0204433ebdb0e86b4871094c/filter/pdftoraster.cxx#L1620", "tags": ["Product"], "source": "security-advisories@github.com"}, {"url": "https://github.com/OpenPrinting/cups-filters/blob/aea8d0db017e495b0204433ebdb0e86b4871094c/filter/pdftoraster.cxx#L1880", "tags": ["Product"], "source": "security-advisories@github.com"}, {"url": "https://github.com/OpenPrinting/cups-filters/commit/50d94ca0f2fa6177613c97c59791bde568631865", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/OpenPrinting/cups-filters/security/advisories/GHSA-893j-2wr2-wrh9", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/OpenPrinting/libcupsfilters/blob/1dd86d835b27ed149b66aee1a4853d1db8a1f44c/cupsfilters/pdftoraster.cxx#L1790", "tags": ["Product"], "source": "security-advisories@github.com"}, {"url": "http://www.openwall.com/lists/oss-security/2025/11/12/2", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "cups-filters contains backends, filters, and other software required to get the cups printing service working on operating systems other than macos. In cups-filters prior to 1.28.18, by crafting a PDF file with a large `MediaBox` value, an attacker can cause CUPS-Filter 1.x\u2019s `pdftoraster` tool to write beyond the bounds of an array. First, a PDF with a large `MediaBox` width value causes `header.cupsWidth` to become large. Next, the calculation of `bytesPerLine = (header.cupsBitsPerPixel * header.cupsWidth + 7) / 8` overflows, resulting in a small value. Then, `lineBuf` is allocated with the small `bytesPerLine` size. Finally, `convertLineChunked` calls `writePixel8`, which attempts to write to `lineBuf` outside of its buffer size (out of bounds write). In libcupsfilters, the maintainers found the same `bytesPerLine` multiplication without overflow check, but the provided test case does not cause an overflow there, because the values are different. Commit 50d94ca0f2fa6177613c97c59791bde568631865 contains a patch, which is incorporated into cups-filters version 1.28.18."}], "lastModified": "2026-01-20T18:12:40.827", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:openprinting:cups-filters:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1E8D664D-AE1E-4B08-8CB0-91A43C19EE27", "versionEndExcluding": "1.28.18"}, {"criteria": "cpe:2.3:a:openprinting:libcupsfilters:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D664D9C3-6C68-41D2-ADC0-A47B8003B47D", "versionEndExcluding": "2.1.2", "versionStartIncluding": "2.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}