CVE-2020-10204 Remote Code Execution - JavaEL Injection (low privileged accounts) in Nexus Repository Manager

What is CVE-2020-10204?

CVE-2020-10204 is a high-severity code injection vulnerability in n/a, published on 1 Apr 2020. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Sonatype Nexus Repository before 3.21.2 allows Remote Code Execution.

Weakness: CWE-20

Which versions are affected by CVE-2020-10204?

2 open source packages ship an affected version, including org.sonatype.nexus:nexus-core. It affects 1 product.

Products include Sonatype Nexus.

How do I fix CVE-2020-10204?

Upgrade org.sonatype.nexus:nexus-core to 3.21.2 or later.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2020-10204 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-10204 exists.

Public exploit code: 1 Nuclei template and 1 proofs of concept on GitHub.

Other vulnerabilities in n/a

• CVE-2020-10199 Sonatype Nexus Repository Remote Code Execution Exploited High 8.8
• CVE-2020-11444 Missing authorization in n/a High 8.8
• CVE-2014-9389 Path traversal in n/a High 7.5
• CVE-2014-2034 Auth bypass in n/a High 7.5
• CVE-2014-0792 Deserialization in n/a High 7.5

Sources

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

Also known as GHSA-8h56-v53h-5hhj.