CVE-2022-36087

Public Exploit
OAuthLib vulnerable DoS when attacker provides malicious IPV6 URI

Description

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.

Categories

5.7
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.32%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org
Affected: oauthlib oauthlib
Published at:
Updated at:

References

Link Tags
https://github.com/oauthlib/oauthlib/security/advisories/GHSA-3pgj-pg6c-r5p7 mitigation third party advisory exploit
https://github.com/oauthlib/oauthlib/commit/2e40b412c844ecc4673c3fa3f72181f228bdbacd third party advisory patch
https://github.com/oauthlib/oauthlib/blob/2b8a44855a51ad5a5b0c348a08c2564a2e197ea2/oauthlib/uri_validate.py third party advisory exploit
https://github.com/oauthlib/oauthlib/blob/d4bafd9f1d0eba3766e933b1ac598cbbf37b8914/oauthlib/oauth2/rfc6749/grant_types/base.py#L232 third party advisory exploit
https://github.com/oauthlib/oauthlib/releases/tag/v3.2.1 third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QRYLYHE5HWF6R2CRLJFUK4PILR47WXOE/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X2CQZM5CKOUM4GW2GTAPQEQFPITQ6F7S/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NBCQJR3ZF7FVNTJYRVPVSQEQRAYZIUHU/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LXOPIA6M57CFQPUT6HHSNXCTV6QA3UDI/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2022-36087?
CVE-2022-36087 has been scored as a medium severity vulnerability.
How to fix CVE-2022-36087?
To fix CVE-2022-36087, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-36087 being actively exploited in the wild?
It is possible that CVE-2022-36087 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-36087?
CVE-2022-36087 affects oauthlib oauthlib.
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