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Integer Overflow or Wraparound The advisory has been revoked - it doesn't affect any version of package varnish  (opens in a new tab)

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EPSS
2.42% (83rd percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-VARNISH-316643
  • published4 Aug 2017
  • disclosed4 Aug 2017
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Introduced: 4 Aug 2017

CVE-2017-12425  (opens in a new tab)
CWE-190  (opens in a new tab)

Amendment

The Debian security team deemed this advisory irrelevant for Debian:unstable.

NVD Description

Note: Versions mentioned in the description apply only to the upstream varnish package and not the varnish package as distributed by Debian.

An issue was discovered in Varnish HTTP Cache 4.0.1 through 4.0.4, 4.1.0 through 4.1.7, 5.0.0, and 5.1.0 through 5.1.2. A wrong if statement in the varnishd source code means that particular invalid requests from the client can trigger an assert, related to an Integer Overflow. This causes the varnishd worker process to abort and restart, losing the cached contents in the process. An attacker can therefore crash the varnishd worker process on demand and effectively keep it from serving content - a Denial-of-Service attack. The specific source-code filename containing the incorrect statement varies across releases.