cve/2021/CVE-2021-29262.md

### [CVE-2021-29262](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29262)
![](https://img.shields.io/static/v1?label=Product&message=Apache%20Solr&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=Apache%20Solr%3C%208.8.2%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-522%20Insufficiently%20Protected%20Credentials&color=brighgreen)

### Description

When starting Apache Solr versions prior to 8.8.2, configured with the SaslZkACLProvider or VMParamsAllAndReadonlyDigestZkACLProvider and no existing security.json znode, if the optional read-only user is configured then Solr would not treat that node as a sensitive path and would allow it to be readable. Additionally, with any ZkACLProvider, if the security.json is already present, Solr will not automatically update the ACLs.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/GGStudy-DDUp/2021hvv_vul
- https://github.com/YinWC/2021hvv_vul
- https://github.com/kenlavbah/log4jnotes