DescriptionAn issue was discovered in Varnish Cache before 6.0.4 LTS, and 6.1.x and 6.2.x before 6.2.1. An HTTP/1 parsing failure allows a remote attacker to trigger an assert by sending crafted HTTP/1 requests. The assert will cause an automatic restart with a clean cache, which makes it a Denial of Service attack.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severityhigh
Debian Bugs939333

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
varnish (PTS)jessie (security), jessie4.0.2-1+deb8u1fixed
stretch (security), stretch5.0.0-7+deb9u2fixed
buster, buster (security)6.1.1-1+deb10u1fixed
bullseye, sid6.2.1-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
varnishsourcejessie(not affected)
varnishsourcestretch(not affected)


[stretch] - varnish <not-affected> (Only a security issue in 6.0 and later)
[jessie] - varnish <not-affected> (Only a security issue in 6.0 and later)

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