High severity7.5NVD Advisory· Published Aug 4, 2017· Updated Jun 17, 2026
CVE-2017-12425
CVE-2017-12425
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
36cpe:2.3:a:varnish_cache_project:varnish_cache:4.0.1:*:*:*:*:*:*:*+ 7 more
- cpe:2.3:a:varnish_cache_project:varnish_cache:4.0.1:*:*:*:*:*:*:*
- cpe:2.3:a:varnish_cache_project:varnish_cache:4.0.2:*:*:*:*:*:*:*
- cpe:2.3:a:varnish_cache_project:varnish_cache:4.0.3:*:*:*:*:*:*:*
- cpe:2.3:a:varnish_cache_project:varnish_cache:4.0.4:*:*:*:*:*:*:*
- cpe:2.3:a:varnish_cache_project:varnish_cache:5.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:varnish_cache_project:varnish_cache:5.1.0:*:*:*:*:*:*:*
- cpe:2.3:a:varnish_cache_project:varnish_cache:5.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:varnish_cache_project:varnish_cache:5.1.2:*:*:*:*:*:*:*
cpe:2.3:a:varnish-cache:varnish:4.0.2:rc-1:*:*:*:*:*:*+ 5 more
- cpe:2.3:a:varnish-cache:varnish:4.0.2:rc-1:*:*:*:*:*:*
- cpe:2.3:a:varnish-cache:varnish:4.0.3:rc-1:*:*:*:*:*:*
- cpe:2.3:a:varnish-cache:varnish:4.0.3:rc-2:*:*:*:*:*:*
- cpe:2.3:a:varnish-cache:varnish:4.0.3:rc-2-proper:*:*:*:*:*:*
- cpe:2.3:a:varnish-cache:varnish:4.0.3:rc-3:*:*:*:*:*:*
- cpe:2.3:a:varnish-cache:varnish:4.1.0:*:*:*:*:*:*:*
cpe:2.3:a:varnish-software:varnish_cache:4.1.0:beta1:*:*:*:*:*:*+ 19 more
- cpe:2.3:a:varnish-software:varnish_cache:4.1.0:beta1:*:*:*:*:*:*
- cpe:2.3:a:varnish-software:varnish_cache:4.1.0:technology_preview1:*:*:*:*:*:*
- cpe:2.3:a:varnish-software:varnish_cache:4.1.1:*:*:*:*:*:*:*
- cpe:2.3:a:varnish-software:varnish_cache:4.1.1:beta1:*:*:*:*:*:*
- cpe:2.3:a:varnish-software:varnish_cache:4.1.1:beta2:*:*:*:*:*:*
- cpe:2.3:a:varnish-software:varnish_cache:4.1.2:*:*:*:*:*:*:*
- cpe:2.3:a:varnish-software:varnish_cache:4.1.2:beta1:*:*:*:*:*:*
- cpe:2.3:a:varnish-software:varnish_cache:4.1.2:beta2:*:*:*:*:*:*
- cpe:2.3:a:varnish-software:varnish_cache:4.1.3:*:*:*:*:*:*:*
- cpe:2.3:a:varnish-software:varnish_cache:4.1.3:beta1:*:*:*:*:*:*
- cpe:2.3:a:varnish-software:varnish_cache:4.1.3:beta2:*:*:*:*:*:*
- cpe:2.3:a:varnish-software:varnish_cache:4.1.4:*:*:*:*:*:*:*
- cpe:2.3:a:varnish-software:varnish_cache:4.1.4:beta1:*:*:*:*:*:*
- cpe:2.3:a:varnish-software:varnish_cache:4.1.4:beta2:*:*:*:*:*:*
- cpe:2.3:a:varnish-software:varnish_cache:4.1.4:beta3:*:*:*:*:*:*
- cpe:2.3:a:varnish-software:varnish_cache:4.1.5:*:*:*:*:*:*:*
- cpe:2.3:a:varnish-software:varnish_cache:4.1.5:beta1:*:*:*:*:*:*
- cpe:2.3:a:varnish-software:varnish_cache:4.1.5:beta2:*:*:*:*:*:*
- cpe:2.3:a:varnish-software:varnish_cache:4.1.6:*:*:*:*:*:*:*
- cpe:2.3:a:varnish-software:varnish_cache:4.1.7:*:*:*:*:*:*:*
- Range: 4.0.1 - 4.0.4, 4.1.0 - 4.1.7, 5.0.0, 5.1.0 - 5.1.2
- Range: 4.0.1 - 4.0.4, 4.1.0 - 4.1.7, 5.0.0, 5.1.0 - 5.1.2
Patches
Vulnerability mechanics
References
6- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party Advisory
- bugzilla.suse.com/show_bug.cginvdIssue TrackingThird Party Advisory
- github.com/varnishcache/varnish-cache/issues/2379nvdThird Party Advisory
- lists.debian.org/debian-security-announce/2017/msg00186.htmlnvdMailing ListThird Party Advisory
- www.varnish-cache.org/security/VSV00001.htmlnvdVendor Advisory
- www.debian.org/security/2017/dsa-3924nvd
News mentions
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