“Atlassian Confluence OGNL Injection RCE Vulnerability (CVE-2022-26134)” by Qualys
On June 02, 2022, Atlassian published a security advisory about a critical severity Unauthenticated Remote Code Execution vulnerability affecting Confluence Server and Data Center. According to the advisory, the vulnerability is being actively exploited and Confluence Server and Data Center versions after 1.3.0 are affected. In order to exploit a vulnerable server, a remote attacker can send a malicious HTTP GET request with an OGNL payload in the URI. The vulnerable server once exploited would allow the attacker to execute commands remotely with user privileges running the Confluence application.
To detect CVE-2022-26134, the detection sends HTTP GET request with a specially crafted OGNL payload to determine the vulnerability on the target Confluence application. The OGNL payload creates a custom HTTP response header containing the output of the system command executed on Linux and Windows systems. The detection also consists of a Qualys customized OGNL payload which is platform-independent, eliminating false positives and works irrespective of the host operating system by creating a custom HTTP response header with Qualys specified value.
In this detailed technical article, Mayank Deshmukh from Qualys describes OGNL Injection, RCE Payload, Exploit POC, Exploit Analysis and Source Code Analysis. If you are interested in how such vulnerabilities are exploited and detected, check out this article.
Full episode: https://avleonov.com/2022/07/06/vulne...
Article: https://blog.qualys.com/vulnerabiliti...
#Atlassian #Confluence #OGNL #RCE #Qualys