CVE-2016-4437 Apache Shiro Code Execution
Remote attackers can execute arbitrary code or bypass access restrictions in Apache Shiro if the remember-me cipher key is not configured.
- Exploited in the wild
- Since 3 Nov 2021
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-4437?
CVE-2016-4437 is a critical vulnerability in n/a, published on 7 Jun 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Apache Shiro before 1.2.5, when a cipher key has not been configured for the "remember me" feature, allows remote attackers to execute arbitrary code or bypass intended access restrictions via an unspecified request parameter.
Weakness: CWE-321
Which versions are affected by CVE-2016-4437?
2 open source packages ship an affected version, including org.apache.shiro:shiro-core. It affects 4 products.
| Package | Affected | Fixed in |
|---|---|---|
org.apache.shiro:shiro-core Maven | All versions | 1.2.5 |
org.apache.shiro:shiro-core Maven | All versions | 1.2.5 |
Products include Apache Aurora, Apache Shiro, Redhat Fuse, Redhat Jboss Middleware Text-Only Advisories.
How do I fix CVE-2016-4437?
Upgrade org.apache.shiro:shiro-core to 1.2.5 or later. US federal agencies must fix it by 3 May 2022.
Is CVE-2016-4437 being exploited?
Yes. Attackers have exploited CVE-2016-4437 in the wild since at least 3 Nov 2021.
Public exploit code: 1 Metasploit module, 1 Exploit-DB entry, 1 Nuclei template and 7 proofs of concept on GitHub.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2016-4437, GHSA-p836-389h-j692, UBUNTU-CVE-2016-4437, USN-7139-1.