OAuthLib up to 3.2.0 on Python Redirect URI denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability was found in OAuthLib up to 3.2.0 on Python. It has been classified as problematic. Affected is an unknown function of the component Redirect URI Handler. Performing a manipulation results in denial of service. This vulnerability is known as CVE-2022-36087. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in OAuthLib up to 3.2.0 on Python. It has been classified as problematic. This affects an unknown code block of the component Redirect URI Handler. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

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.

The weakness was published 09/10/2022 as GHSA-3pgj-pg6c-r5p7. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2022-36087 since 07/15/2022. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 211237 (Fedora 37 : python-oauthlib (2022-5a74a5eea7)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 3.2.1 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 2e40b412c844ecc4673c3fa3f72181f228bdbacd is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (211237), EUVD (EUVD-2022-0170) and CERT Bund (WID-SEC-2023-1185). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Fedora Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • Gentoo Linux
  • SUSE openSUSE
  • Red Hat OpenShift
  • RESF Rocky Linux

Productinfo

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.2

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CNA Base Score: 5.7
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 211237
Nessus Name: Fedora 37 : python-oauthlib (2022-5a74a5eea7)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: OAuthLib 3.2.1
Patch: 2e40b412c844ecc4673c3fa3f72181f228bdbacd

Timelineinfo

07/15/2022 🔍
09/10/2022 +57 days 🔍
09/10/2022 +0 days 🔍
03/09/2026 +1276 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-3pgj-pg6c-r5p7
Status: Confirmed

CVE: CVE-2022-36087 (🔍)
GCVE (CVE): GCVE-0-2022-36087
GCVE (VulDB): GCVE-100-208185
EUVD: 🔍
CERT Bund: WID-SEC-2023-1185 - Red Hat Enterprise Linux: Mehrere Schwachstellen

Entryinfo

Created: 09/10/2022 07:17
Updated: 03/09/2026 03:32
Changes: 09/10/2022 07:17 (54), 10/15/2022 07:35 (11), 11/16/2024 14:47 (16), 04/30/2025 00:05 (3), 11/29/2025 21:05 (7), 03/09/2026 03:32 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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