Improper input validation in Openprinting Libcupsfilters
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.799 (99.6th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.776 · newest: 0.799 · change: +0.023
Affected products
- Openprinting Libcupsfilters — versions <= 2.1b1, 2.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/OpenPrinting/libcupsfilters/security/advisories/GHSA-w63j-6g73-wmg5 (Exploit, Vendor Advisory)
- github.com/OpenPrinting/cups-browsed/security/advisories/GHSA-rj88-6mr5-rcw8 (Not Applicable)
- github.com/OpenPrinting/cups-filters/security/advisories/GHSA-p9rh-jxmq-gq47 (Not Applicable)
- github.com/OpenPrinting/libppd/security/advisories/GHSA-7xfx-47qg-grp6 (Not Applicable)
- www.cups.org (Product)
- www.evilsocket.net/2024/09/26/Attacking-UNIX-systems-via-CUPS-Part-I (Exploit, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Patch)
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2024-47076?
- CVE-2024-47076 is a high-severity vulnerability in Openprinting Libcupsfilters, classified under Improper Input Validation. CVSS score: 8.6/10. Published 2024-09-26.
- How severe is CVE-2024-47076?
- High severity. CVSS v3 base score is 8.6 out of 10.
- Is CVE-2024-47076 known to be exploited?
- 14 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.