CVE-2017-12425

 

Published at: - 04-08-2017 11:29

Last modified: - 02-08-2022 09:13

Total changes: - 4

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

 

Verification logic

 

Reference

• https://www.varnish-cache.org/security/VSV00001.html#vsv00001
• https://lists.debian.org/debian-security-announce/2017/msg00186.html
• https://github.com/varnishcache/varnish-cache/issues/2379
• https://bugzilla.suse.com/show_bug.cgi?id=1051917
• https://bugzilla.redhat.com/show_bug.cgi?id=1477222
• DSA-3924-

 

Keywords

NVD

 

CVE-2017-12425

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures