Executive Summary

Informations
Name CVE-2021-36740 First vendor Publication 2021-07-14
Vendor Cve Last vendor Modification 2024-11-21

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Overall CVSS Score 6.5
Base Score 6.5 Environmental Score 6.5
impact SubScore 2.5 Temporal Score 6.5
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact Low
Integrity Impact Low Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:N)
Cvss Base Score 6.4 Attack Range Network
Cvss Impact Score 4.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36740

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 36
Application 18
Application 37
Application 2
Os 2
Os 2

Sources (Detail)

https://docs.varnish-software.com/security/VSV00007/
https://github.com/varnishcache/varnish-cache/commit/82b0a629f60136e76112c6f2...
https://github.com/varnishcache/varnish-cache/commit/9be22198e258d0e7a5c41f42...
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedora...
https://varnish-cache.org/security/VSV00007.html
https://www.debian.org/security/2022/dsa-5088
Source Url

Alert History

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Date Informations
2025-07-15 01:48:28
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2025-07-14 12:14:55
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2025-06-26 01:47:24
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2025-03-29 02:52:38
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2025-03-28 13:25:59
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2024-11-28 13:59:01
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2024-08-02 13:27:07
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2024-08-02 01:26:07
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2024-02-02 02:27:17
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2024-02-01 12:24:21
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2023-11-07 21:34:30
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2023-09-05 13:21:34
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2023-09-05 01:23:52
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2023-09-02 13:20:05
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2023-09-02 01:24:13
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2023-08-12 13:26:11
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2023-08-12 01:23:27
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2023-08-11 13:18:27
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2023-08-11 01:24:14
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2023-08-06 13:16:24
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2023-08-06 01:23:11
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2023-08-04 13:16:46
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2023-08-04 01:23:32
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2023-07-14 13:16:49
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2023-07-14 01:23:20
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2023-03-29 02:18:57
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2023-03-28 12:23:33
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2022-10-11 13:08:32
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2022-10-11 01:23:00
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2022-08-03 09:27:32
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2022-08-03 02:09:36
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2022-08-03 00:28:04
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2022-08-02 21:27:39
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2022-06-23 01:59:40
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2022-06-22 01:59:51
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2022-05-15 17:27:26
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2022-03-04 17:23:12
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2021-08-05 21:23:18
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2021-08-05 01:43:17
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2021-07-25 09:22:56
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2021-07-14 21:23:07
  • First insertion