Vulnerability Details CVE-2017-12425
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.008
EPSS Ranking 73.3%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
- http://www.debian.org/security/2017/dsa-3924
- https://bugzilla.redhat.com/show_bug.cgi?id=1477222
- https://bugzilla.suse.com/show_bug.cgi?id=1051917
- https://github.com/varnishcache/varnish-cache/issues/2379
- https://lists.debian.org/debian-security-announce/2017/msg00186.html
- https://www.varnish-cache.org/security/VSV00001.html#vsv00001
- http://www.debian.org/security/2017/dsa-3924
- https://bugzilla.redhat.com/show_bug.cgi?id=1477222
- https://bugzilla.suse.com/show_bug.cgi?id=1051917
- https://github.com/varnishcache/varnish-cache/issues/2379
- https://lists.debian.org/debian-security-announce/2017/msg00186.html
- https://www.varnish-cache.org/security/VSV00001.html#vsv00001
Products affected by CVE-2017-12425
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cpe:2.3:a:varnish-cache:varnish:4.0.2
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cpe:2.3:a:varnish-cache:varnish:4.0.3
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cpe:2.3:a:varnish-cache:varnish:4.1.0
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cpe:2.3:a:varnish-software:varnish_cache:4.1.0
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cpe:2.3:a:varnish-software:varnish_cache:4.1.1
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cpe:2.3:a:varnish-software:varnish_cache:4.1.2
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cpe:2.3:a:varnish-software:varnish_cache:4.1.3
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cpe:2.3:a:varnish-software:varnish_cache:4.1.4
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cpe:2.3:a:varnish-software:varnish_cache:4.1.5
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cpe:2.3:a:varnish-software:varnish_cache:4.1.6
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cpe:2.3:a:varnish-software:varnish_cache:4.1.7
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cpe:2.3:a:varnish_cache_project:varnish_cache:4.0.1
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cpe:2.3:a:varnish_cache_project:varnish_cache:4.0.2
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cpe:2.3:a:varnish_cache_project:varnish_cache:4.0.3
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cpe:2.3:a:varnish_cache_project:varnish_cache:4.0.4
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cpe:2.3:a:varnish_cache_project:varnish_cache:5.0.0
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cpe:2.3:a:varnish_cache_project:varnish_cache:5.1.0
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cpe:2.3:a:varnish_cache_project:varnish_cache:5.1.1
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cpe:2.3:a:varnish_cache_project:varnish_cache:5.1.2