External Control of File Name or Path Affecting cups-lpd-debuginfo package, versions <1:2.4.16-1.amzn2023.0.3


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.01% (3rd percentile)

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  • Snyk IDSNYK-AMZN2023-CUPSLPDDEBUGINFO-16351771
  • published3 May 2026
  • disclosed3 Apr 2026

Introduced: 3 Apr 2026

CVE-2026-34990  (opens in a new tab)
CWE-73  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 cups-lpd-debuginfo to version 1:2.4.16-1.amzn2023.0.3 or higher.
This issue was patched in ALAS2023-2026-1635.

NVD Description

Note: Versions mentioned in the description apply only to the upstream cups-lpd-debuginfo package and not the cups-lpd-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. In versions 2.4.16 and prior, a local unprivileged user can coerce cupsd into authenticating to an attacker-controlled localhost IPP service with a reusable Authorization: Local ... token. That token is enough to drive /admin/ requests on localhost, and the attacker can combine CUPS-Create-Local-Printer with printer-is-shared=true to persist a file:///... queue even though the normal FileDevice policy rejects such URIs. Printing to that queue gives an arbitrary root file overwrite; the PoC below uses that primitive to drop a sudoers fragment and demonstrate root command execution. At time of publication, there are no publicly available patches.

CVSS Base Scores

version 3.1