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CVE-2021-39241

Published: 17 August 2021

An issue was discovered in HAProxy 2.0 before 2.0.24, 2.2 before 2.2.16, 2.3 before 2.3.13, and 2.4 before 2.4.3. An HTTP method name may contain a space followed by the name of a protected resource. It is possible that a server would interpret this as a request for that protected resource, such as in the "GET /admin? HTTP/1.1 /static/images HTTP/1.1" example.

Priority

Medium

Cvss 3 Severity Score

5.3

Score breakdown

Status

Package Release Status
haproxy
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(code not present)
focal
Released (2.0.13-2ubuntu0.2)
impish
Released (2.2.9-2ubuntu1)
trusty Does not exist

upstream Needs triage

hirsute
Released (2.2.9-1ubuntu0.1)
xenial Not vulnerable
(code not present)
jammy
Released (2.2.9-2ubuntu1)
Patches:
upstream: https://git.haproxy.org/?p=haproxy.git;a=commit;h=89265224d314a056d77d974284802c1b8a0dc97f

Severity score breakdown

Parameter Value
Base score 5.3
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact Low
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N