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CVE-2021-40346

CVE information

Published

2 years ago

Last Modified

5 months ago

CVSSv2.0 Severity

Medium

CVSSv3.1 Severity

High

Impact Analysis

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Description

An integer overflow exists in HAProxy 2.0 through 2.5 in htx_add_header that can be exploited to perform an HTTP request smuggling attack, allowing an attacker to bypass all configured http-request HAProxy ACLs and possibly other ACLs..

CVSSv2.0 Score

Severity
Medium
Base Score
5/10
Exploit Score
10/10
Access Vector
Network
Access Complexity
Low
Authentication Required
None
Impact Score
2.9/10
Confidentiality Impact
None
Availability Impact
None
Integrity Impact
Partial

CVSSv3.1 Score

Severity
High
Base Score
7.5/10
Exploit Score
3.9/10
Access Vector
Network
Access Complexity
Low
Privileges Required
None
Impact Score
3.6/10
Confidentiality Impact
None
Availability Impact
None
Integrity Impact
High
Scope
Unchanged
User Interaction
None

Products Affected

CPE Affected Vulnerable Excluding Edit
cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*
  Yes
2.4.0 2.4.4
cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*
  Yes
2.3.0 2.3.14
cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*
  Yes
2.2.0 2.2.17
cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*
  Yes
2.0.0 2.0.25
cpe:2.3:a:haproxy:haproxy:2.5:dev1:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:haproxy:haproxy:2.5:dev2:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:haproxy:haproxy:2.5:dev3:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:haproxy:haproxy:2.5:dev4:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:haproxy:haproxy:2.5:dev5:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:haproxy:haproxy:2.5:dev6:*:*:*:*:*:*
  Yes
- -
cpe:2.3:a:haproxy:haproxy:2.5:dev0:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
  Yes
- -

References