CVE-2017-12425 | BDVDB-2026-88442 Detail
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.
Impact#
No impact statement in the source data.
Weaknesses#
No weakness recorded in the source data.
References#
- https://www.varnish-cache.org/security/VSV00001.html#vsv00001
- https://lists.debian.org/debian-security-announce/2017/msg00186.html
- http://www.debian.org/security/2017/dsa-3924
- https://bugzilla.suse.com/show_bug.cgi?id=1051917
- https://bugzilla.redhat.com/show_bug.cgi?id=1477222
- https://github.com/varnishcache/varnish-cache/issues/2379
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.