Vulnerability Monitor

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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 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.

Published

2021-07-14T17:15:08.253

Last Modified

2024-11-21T06:13:59.623

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:N

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: NONE
Exploitability Score

10.0

Impact Score

4.9

Weaknesses
  • Type: Primary
    CWE-444
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application varnish-cache varnish_cache < 6.0.8 Yes
Application varnish-cache varnish_cache 6.0.8 Yes
Application varnish-cache varnish_cache 6.0.8 Yes
Application varnish-software varnish_cache ≤ 6.0.5 Yes
Application varnish-software varnish_cache ≤ 6.0.7 Yes
Application varnish_cache_project varnish_cache ≤ 5.2.1 Yes
Application varnish_cache_project varnish_cache ≤ 6.6.0 Yes
Operating System fedoraproject fedora 33 Yes
Operating System fedoraproject fedora 34 Yes
Operating System debian debian_linux 10.0 Yes
Operating System debian debian_linux 11.0 Yes
References