Security Digest · Vulnerability record
CVE-2024-47076: libcupsfilters's cfGetPrinterAttributes5 does not validate IPP attributes returned from an IPP server
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.
CVSS 8.6 High EPSS 79.9% · p99.6 Check exposure
Should you act?
High exploit likelihood
EPSS ranks it in the top 5% of all CVEs for likely exploitation in the next 30 days. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- Not in CISA KEV, but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 79.9%, percentile 99.6: FIRST’s model estimates a 79.9% chance of exploitation activity in the next 30 days, higher than 99.6% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Editorial verdict: Check exposure. CUPS cups-browsed RCE Chain: Real, but Needs a Print Job — Not the internet-ending bug the pre-disclosure hype suggested: code runs only when someone prints to the rogue printer, as the unprivileged lp user; but nothing should expose UDP 631 to the internet, and exposed hosts can be abused for DDoS.
What it is
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.
Weakness type: CWE-20.
Product: OpenPrinting libcupsfilters · Assigned by: GitHub_M · Published: 2024-09-26
Affected and fixed versions
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| OpenPrinting | libcupsfilters | <= 2.1b1 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_M | 3.1 | 8.6 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Privileges required: none (no login)
- User interaction: none
- Scope: changed (can affect other components)
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc, automatable no, technical impact partial.
- FIRST EPSS (model of 2026-10-21): 79.90% probability of exploitation activity in the next 30 days; percentile 99.6.
Timeline
- — CVE record published by GitHub_M
- — erroneo.us brief: CUPS cups-browsed RCE Chain: Real, but Needs a Print Job
- — CVE record last updated
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vulnerability records
- CVE.org record CVE-2024-47076 cve.org
- NVD entry CVE-2024-47076 nvd.nist.gov
Other references from the CVE record and advisory
- github.com github.com
- github.com github.com
- github.com github.com
- github.com github.com
- cups.org cups.org
- evilsocket.net evilsocket.net
- github.com github.com
- security.netapp.com security.netapp.com
- lists.debian.org lists.debian.org