Jira - Arbitrary File Read (CVE-2021-26086)

Jira is affected by a Pre-Authorization Arbitrary File Read vulnerability in the /s/ endpoint. This allows attackers to read sensitive information from the target system by sending a specially crafted HTTP GET request to the vulnerable endpoint. The affected endpoints are /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 and META-INF/maven/com.atlassian.jira/jira-webapp-dist/pom.xml and META-INF/maven/com.atlassian.jira/atlassian-jira-webapp/pom.xml .

Sniper can read arbitrary files from the target system and extract them as evidence.

The risk exists that a remote unauthenticated attacker could exploit this vulnerability to read sensitive information from arbitrary files located on the file system of the server.

Upgrade Jira to the latest version.

https://nvd.nist.gov/vuln/detail/CVE-2021-26086

https://jira.atlassian.com/browse/JRASERVER-72695