CRLF Injection Affecting cups-ipptool-debuginfo package, versions <1:2.4.20-1.amzn2023.0.1


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.2% (10th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-AMZN2023-CUPSIPPTOOLDEBUGINFO-22397360
  • published10 Nov 2026
  • disclosed15 Oct 2026

Introduced: 15 Oct 2026

NewCVE-2026-55453  (opens in a new tab)
CWE-93  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 cups-ipptool-debuginfo to version 1:2.4.20-1.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2026-3415.

NVD Description

Note: Versions mentioned in the description apply only to the upstream cups-ipptool-debuginfo package and not the cups-ipptool-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. Prior to 2.4.20, the backend/ipp.c quote_string() function preserves carriage-return and line-feed characters in a remote printer-controlled marker-message before report_attr() writes the value to the scheduler status stream. The scheduler can parse an injected newline as a separate PPD: control line and persist an attacker-selected PPD keyword. The reporter demonstrated that a later print job on a Foomatic-backed queue could consume an injected FoomaticRIPCommandLine value and execute in the filter context as lp. This issue is fixed in version 2.4.20.

CVSS Base Scores

version 3.1