CVE-2024-47076 – libcupsfilters's cfGetPrinterAttributes5 does not validate IPP attributes returned from an IPP server

https://notcve.org/view.php?id=CVE-2024-47076

CUPS is a standards-based, open-source printing system, and `libcupsfilters` contains the code of the filters of the former `cups-filters` package as library functions to be used for the data format conversion tasks needed in Printer Applications. The `cfGetPrinterAttributes5` function in `libcupsfilters` does not sanitize IPP attributes returned from an IPP server. When these IPP attributes are used, for instance, to generate a PPD file, this can lead to attacker controlled data to be provided to the rest of the CUPS system. A flaw was found in OpenPrinting CUPS. In certain conditions, a remote attacker can add a malicious printer or directly hijack an existing printer by replacing the valid IPP URL with a malicious one. • https://github.com/mutkus/CVE-2024-47076 https://github.com/OpenPrinting/cups-browsed/security/advisories/GHSA-rj88-6mr5-rcw8 https://github.com/OpenPrinting/cups-filters/security/advisories/GHSA-p9rh-jxmq-gq47 https://github.com/OpenPrinting/libcupsfilters/security/advisories/GHSA-w63j-6g73-wmg5 https://github.com/OpenPrinting/libppd/security/advisories/GHSA-7xfx-47qg-grp6 https://www.cups.org https://www.evilsocket.net/2024/09/26/Attacking-UNIX-systems-via-CUPS-Part-I https://access.redhat.c • CWE-20: Improper Input Validation •