CVE-2019-15002
📋 TL;DR
This CVE describes a Cross-Site Request Forgery (CSRF) vulnerability in Atlassian Jira, where the login form lacks a CSRF token, allowing attackers to trick users into logging into an attacker-controlled account. It affects Jira versions 7.6.4 to 8.1.0, potentially leading to unauthorized access and data manipulation.
💻 Affected Systems
- Atlassian Jira
📦 What is this software?
Jira Server by Atlassian
⚠️ Risk & Real-World Impact
Worst Case
An attacker could log a user into a malicious account, leading to data theft, privilege escalation, or further attacks like session hijacking or malware deployment.
Likely Case
Attackers exploit this to gain unauthorized access to user accounts, potentially compromising sensitive project data or performing actions on behalf of the user.
If Mitigated
With proper CSRF protections or patches, the risk is minimized, preventing unauthorized logins and maintaining account integrity.
🎯 Exploit Status
Exploitation involves crafting a malicious web page that triggers a login request; no authentication is needed, making it straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 8.1.1 and later
Vendor Advisory: https://jira.atlassian.com/browse/JRASERVER-67979
Restart Required: Yes
Instructions:
1. Backup Jira data. 2. Download and install Jira version 8.1.1 or later from Atlassian's official site. 3. Follow the upgrade guide to apply the patch. 4. Restart Jira services to complete the update.
🔧 Temporary Workarounds
Implement CSRF Protection Manually
allAdd CSRF tokens to login forms or use SameSite cookie attributes to mitigate CSRF attacks.
Configure web server or application settings to include CSRF tokens; refer to Atlassian documentation for specific steps.
🧯 If You Can't Patch
- Restrict access to Jira by implementing network segmentation or firewalls to limit exposure to untrusted sources.
- Monitor logs for unusual login attempts and enforce strong authentication mechanisms like multi-factor authentication (MFA).
🔍 How to Verify
Check if Vulnerable:
Check the Jira version via the admin interface or by running 'java -jar atlassian-jira-*.jar --version' on the server; if version is between 7.6.4 and 8.1.0 inclusive, it is vulnerable.Check Version:
java -jar atlassian-jira-*.jar --versionVerify Fix Applied:
After patching, confirm the version is 8.1.1 or later and test login functionality to ensure CSRF tokens are required.📡 Detection & Monitoring
Log Indicators:
- Look for multiple failed login attempts from unexpected IPs or successful logins to unfamiliar accounts in Jira access logs.
Network Indicators:
- Monitor for HTTP POST requests to login endpoints without CSRF tokens or from suspicious referrers.
SIEM Query:
source="jira.log" AND (event="login" AND csrf_token="null")