🛡️ CVE-2021-21679 — azure-ad

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-352 OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Jenkins Azure AD Plugin allows bypassing CSRF protection for any URL

An extension point in Jenkins allows selectively disabling cross-site request forgery (CSRF) protection for specific URLs. Jenkins Azure AD Plugin implements this extension point for URLs used by a JavaScript component.

In Jenkins Azure AD Plugin 179.vf6841393099e and earlier this implementation is too permissive, allowing attackers to craft URLs that would bypass the CSRF protection of any target URL.

This vulnerability was originally introduced in Azure AD Plugin 164.v5b48baa961d2.

Azure AD Plugin 180.v8b1e80e6f242 no longer allows bypassing CSRF protection for URLs used by the JavaScript component. Instead, that component was reconfigured to pass the expected CSRF token.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2021-21679 is classified as CWE-352: Cross-Site Request Forgery (CSRF). A state-changing request is accepted without proof it was intended, so another site can trigger it using the victim's session.

Affected software

CVE-2021-21679 is recorded against 1 package.

  • org.jenkins-ci.plugins:azure-ad (fixed in 180.v8b1e80e6f242)

Timeline and source

Published on 24 May 2022 and last revised on 16 February 2024. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Package)
www.jenkins.io (Web)
www.openwall.com (Web)

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE CWE-352
Public Exploit ✅ No
Source OSV
Published 2022-05-24
Updated 2026-08-12
Modified 2024-02-16
Fix URL N/A

Affected Packages

Software From version Fixed in
org.jenkins-ci.plugins:azure-ad — 180.v8b1e80e6f242

Similar Threats

Site Security Check

Is azure-ad part of your stack?

CVE-2021-21679 is rated CVSS 8.0 High. BotEraser scans your installation against known CVE records and tells you whether this vulnerability applies to the versions you actually run.

Scan My Site Free →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.