HTTP Request Smuggling Affecting varnish:6/varnish package, versions <0:6.0.6-2.module+el8.4.0+11921+1a6539fc.1


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.67% (81st percentile)

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  • Snyk IDSNYK-RHEL8-VARNISH-4933572
  • published26 Jul 2021
  • disclosed13 Jul 2021

Introduced: 13 Jul 2021

CVE-2021-36740  (opens in a new tab)
CWE-444  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade RHEL:8 varnish:6/varnish to version 0:6.0.6-2.module+el8.4.0+11921+1a6539fc.1 or higher.
This issue was patched in RHSA-2021:2988.

NVD Description

Note: Versions mentioned in the description apply only to the upstream varnish:6/varnish package and not the varnish:6/varnish package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

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.

CVSS Scores

version 3.1