Source: libcupsfilters Version: 2.0.0-3 Severity: important Tags: security upstream X-Debbugs-Cc: [email protected], Debian Security Team <[email protected]> Control: clone -1 -2 Control: reassign -2 src:cups-filters 1.28.17-6 Control: retitle -2 cups-filters: CVE-2025-64503 Control: found -2 1.28.17-3+deb12u1
Hi, The following vulnerability was published for libcupsfilters/cups-filters. CVE-2025-64503[0]: | 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’s `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. If you fix the vulnerability please also make sure to include the CVE (Common Vulnerabilities & Exposures) id in your changelog entry. For further information see: [0] https://security-tracker.debian.org/tracker/CVE-2025-64503 https://www.cve.org/CVERecord?id=CVE-2025-64503 [1] https://www.openwall.com/lists/oss-security/2025/11/12/2 [2] https://github.com/OpenPrinting/cups-filters/security/advisories/GHSA-893j-2wr2-wrh9 Please adjust the affected versions in the BTS as needed. Regards, Salvatore
