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CVE-2022-36087

Published: 9 September 2022

OAuthLib is an implementation of the OAuth request-signing logic for Python 3.6+. In OAuthLib versions 3.1.1 until 3.2.1, an attacker providing malicious redirect uri can cause denial of service. An attacker can also leverage usage of `uri_validate` functions depending where it is used. OAuthLib applications using OAuth2.0 provider support or use directly `uri_validate` are affected by this issue. Version 3.2.1 contains a patch. There are no known workarounds.

Notes

AuthorNote
mdeslaur
issue introduced in 3.1.1

Priority

Medium

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
python-oauthlib
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(2.0.6-1)
focal Not vulnerable
(3.1.0-1ubuntu2)
jammy
Released (3.2.0-1ubuntu0.1)
kinetic
Released (3.2.0-1ubuntu1)
trusty Ignored
(end of standard support)
upstream
Released (3.2.1)
xenial Not vulnerable

Patches:
upstream: https://github.com/oauthlib/oauthlib/commit/5d85c61998692643dd9d17e05d2646e06ce391e8
upstream: https://github.com/oauthlib/oauthlib/commit/e514826eea15f2b62bbc13da407b71552ef5ff4c

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H