cbcvebase.
CVE-2021-36740
published 2021-07-14

CVE-2021-36740: Varnish Cache, with HTTP/2 enabled, allows request smuggling and VCL authorization bypass via a large Content-Length header for a POST request. This affects…

PriorityP336medium6.5CVSS 3.1
AVNACLPRNUINSUCLILAN
EPSS
1.60%
72.7th percentile
Varnish Cache, with HTTP/2 enabled, allows request smuggling and VCL authorization bypass via a large Content-Length header for a POST request. This affects Varnish Enterprise 6.0.x before 6.0.8r3, and Varnish Cache 5.x and 6.x before 6.5.2, 6.6.x before 6.6.1, and 6.0 LTS before 6.0.8.

Affected

18 ranges
VendorProductVersion rangeFixed in
debiandebian_linux
debiandebian_linux
debianvarnish< varnish 6.5.2-1 (bookworm)varnish 6.5.2-1 (bookworm)
fedoraprojectfedora
fedoraprojectfedora
varnish-cachevarnish>= 0 < 6.5.1-1+deb11u26.5.1-1+deb11u2
varnish-cachevarnish>= 0 < 6.5.2-16.5.2-1
varnish-cachevarnish>= 0 < 6.5.2-16.5.2-1
varnish-cachevarnish>= 0 < 6.5.2-16.5.2-1
varnish-cachevarnish>= 0 < 5.2.1-1ubuntu0.15.2.1-1ubuntu0.1
varnish-cachevarnish>= 0 < 6.2.1-2ubuntu0.16.2.1-2ubuntu0.1
varnish-cachevarnish>= 0 < 6.6.1-1ubuntu0.26.6.1-1ubuntu0.2
varnish-cachevarnish_cache
varnish-cachevarnish_cache>= 6.0.0 < 6.0.86.0.8
varnish-softwarevarnish_cache6.0.0 – 6.0.5
varnish-softwarevarnish_cache6.0.0 – 6.0.7
varnish_cache_projectvarnish_cache5.0.0 – 5.2.1
varnish_cache_projectvarnish_cache6.1.0 – 6.6.0

CVSS provenance

nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
nvdv2.06.4MEDIUMAV:N/AC:L/Au:N/C:P/I:P/A:N
osv7.5HIGH
vendor_ubuntu7.5HIGH
vendor_debian6.5MEDIUM
vendor_redhat6.5MEDIUM
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