CVE-2021-41303 Apache Shiro vulnerable to a specially crafted HTTP request causing an authentication bypass

What is CVE-2021-41303?

CVE-2021-41303 is a critical authentication bypass vulnerability in Apache Shiro, published on 17 Sep 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Apache Shiro before 1.8.0, when using Apache Shiro with Spring Boot, a specially crafted HTTP request may cause an authentication bypass. Users should update to Apache Shiro 1.8.0.

Weakness: CWE-287

Which versions are affected by CVE-2021-41303?

2 open source packages ship an affected version, including org.apache.shiro:shiro-core. It affects 2 products.

Products include Apache Shiro, Oracle Financial Services Crime and Compliance Management Studio.

How do I fix CVE-2021-41303?

Upgrade org.apache.shiro:shiro-core to 1.8.0 or later.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2021-41303 being exploited?

There is no known exploitation of CVE-2021-41303 in the wild and no public exploit code.

Other vulnerabilities in Apache Shiro

• CVE-2023-34478 Path Traversal in Apache Shiro Critical 9.8
• CVE-2022-40664 Authentication Bypass Vulnerability in Shiro when forwarding or including via RequestDispatcher Critical 9.8
• CVE-2022-32532 Authentication Bypass Vulnerability Critical 9.8
• CVE-2020-17523 Authentication bypass in Apache Shiro Critical 9.8
• CVE-2020-17510 Authentication bypass in Apache Shiro Critical 9.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2021-41303, GHSA-f6jp-j6w3-w9hm.