CVE-2021-26084 PoC — Atlassian Confluence Server 注入漏洞

Source

https://github.com/wdjcy/CVE-2021-26084

Associated Vulnerability

Title: Atlassian Confluence Server 注入漏洞 (CVE-2021-26084)
Description:In affected versions of Confluence Server and Data Center, an OGNL injection vulnerability exists that would allow an unauthenticated attacker to execute arbitrary code on a Confluence Server or Data Center instance. The affected versions are before version 6.13.23, from version 6.14.0 before 7.4.11, from version 7.5.0 before 7.11.6, and from version 7.12.0 before 7.12.5.

Readme

# Confluence Server Webwork Pre-Auth OGNL Injection (CVE-2021-26084)


Confluence is a web-based corporate wiki developed by Australian software company Atlassian.

An OGNL injection vulnerability exists that allows an unauthenticated attacker to execute arbitrary code on a Confluence Server or Data Center instance.

References

- https://confluence.atlassian.com/doc/confluence-security-advisory-2021-08-25-1077906215.html
- https://jira.atlassian.com/browse/CONFSERVER-67940
- https://github.com/httpvoid/writeups/blob/main/Confluence-RCE.md
- https://github.com/h3v0x/CVE-2021-26084_Confluence

## Vulnerable Environment

Execute following command to start a Confluence Server 7.4.10:

```
docker-compose up -d
```

After the environment starts, visit ``http://your-ip:8090`` and you will see the installation guide, select "Trial installation", then you will be asked to fill in the license key. You should apply for a Confluence Server test certificate from Atlassian.

On the database configuration page, fill in the form with database address `db`, database name `confluence`, username `postgres`, password `postgres`.

![](1.png)

File Snapshot

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