CVE-2021-21679 Jenkins Azure AD Plugin allows bypassing CSRF protection for any URL
Attackers can craft URLs to bypass CSRF protection in Jenkins via the Azure AD Plugin, potentially allowing unauthorized actions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2021-21679?
CVE-2021-21679 is a high-severity vulnerability in Jenkins Azure AD Plugin, published on 31 Aug 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Jenkins Azure AD Plugin 179.vf6841393099e and earlier allows attackers to craft URLs that would bypass the CSRF protection of any target URL in Jenkins.
Weakness: CWE-352
Which versions are affected by CVE-2021-21679?
2 open source packages ship an affected version, including org.jenkins-ci.plugins:azure-ad. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.jenkins-ci.plugins:azure-ad Maven | All versions | 180.v8b1e80e6f242 |
org.jenkins-ci.plugins:azure-ad Maven | All versions | 180.v8b1e80e6f242 |
Products include Jenkins Azure Ad.
How do I fix CVE-2021-21679?
Upgrade org.jenkins-ci.plugins:azure-ad to 180.v8b1e80e6f242 or later.
Is CVE-2021-21679 being exploited?
There is no known exploitation of CVE-2021-21679 in the wild and no public exploit code.
Other vulnerabilities in Jenkins Azure AD Plugin
- CVE-2023-24426 Insufficient Session Expiration in Jenkins Azure AD Plugin
- CVE-2019-10318 Jenkins Azure AD Plugin stored the client secret unencrypted
- CVE-2023-41935 Non-constant time nonce comparison in Jenkins Microsoft Entra ID (previously Azure AD) Plugin
- CVE-2020-2119 Client secret transmitted in plain text by Azure AD Plugin
- CVE-2026-42525 Jenkins Microsoft Entra ID (previously Azure AD) Plugin has an open redirect vulnerability
Sources
Also known as GHSA-x77r-7m5w-pqq2.