CVE-2020-13933 Authentication bypass in Apache Shiro
Attackers can bypass authentication in applications using Apache Shiro by sending specially crafted HTTP requests.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-13933?
CVE-2020-13933 is a high-severity authentication bypass vulnerability in Debian Debian Linux, published on 17 Aug 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Apache Shiro before 1.6.0, when using Apache Shiro, a specially crafted HTTP request may cause an authentication bypass.
Which versions are affected by CVE-2020-13933?
2 open source packages ship an affected version, including org.apache.shiro:shiro-core. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
org.apache.shiro:shiro-core Maven | All versions | 1.6.0 |
org.apache.shiro:shiro-core Maven | All versions | 1.6.0 |
Products include Apache Shiro, Debian Debian Linux.
How do I fix CVE-2020-13933?
Upgrade org.apache.shiro:shiro-core to 1.6.0 or later.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2020-13933 being exploited?
There is no known exploitation of CVE-2020-13933 in the wild and no public exploit code.
Public exploit code: 3 proofs of concept on GitHub.
Other vulnerabilities in Debian Debian Linux
- CVE-2023-34478 Path Traversal in Apache Shiro
- CVE-2022-40664 Authentication Bypass Vulnerability in Shiro when forwarding or including via RequestDispatcher
- CVE-2022-32532 Authentication Bypass Vulnerability
- CVE-2021-41303 Apache Shiro vulnerable to a specially crafted HTTP request causing an authentication bypass
- CVE-2020-17523 Authentication bypass in Apache Shiro
Sources
Also known as DEBIAN-CVE-2020-13933, GHSA-2vgm-wxr3-6w2j, UBUNTU-CVE-2020-13933.