CVE-2022-0691
📋 TL;DR
CVE-2022-0691 is an authorization bypass vulnerability in the url-parse npm package where attackers can manipulate URL parsing to bypass authorization controls. This affects any application using vulnerable versions of url-parse for URL parsing and authorization logic. The vulnerability allows attackers to access resources they shouldn't have permission to view or modify.
💻 Affected Systems
- url-parse npm package
- Applications using url-parse for URL parsing
📦 What is this software?
Url Parse by Url Parse Project
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through privilege escalation, allowing attackers to access sensitive data, modify critical configurations, or execute unauthorized administrative functions.
Likely Case
Unauthorized access to restricted application resources, data leakage, or modification of user-specific data through manipulated URL parameters.
If Mitigated
Limited impact with proper input validation and authorization checks independent of URL parsing, potentially resulting in failed exploitation attempts.
🎯 Exploit Status
Exploitation requires the attacker to craft specific URL parameters that bypass authorization checks. The vulnerability is well-documented with public proof-of-concept examples available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.5.9 and later
Vendor Advisory: https://github.com/unshiftio/url-parse/commit/0e3fb542d60ddbf6933f22eb9b1e06e25eaa5b63
Restart Required: No
Instructions:
1. Update url-parse dependency to version 1.5.9 or higher. 2. Run 'npm update url-parse' or update package.json to specify 'url-parse': '^1.5.9'. 3. Rebuild and redeploy affected applications.
🔧 Temporary Workarounds
Input Validation Workaround
allImplement strict input validation for URL parameters before passing to url-parse
Authorization Bypass Protection
allAdd additional authorization checks independent of URL parsing results
🧯 If You Can't Patch
- Implement Web Application Firewall (WAF) rules to detect and block malicious URL patterns
- Isolate affected applications behind additional authentication layers and monitor for suspicious access patterns
🔍 How to Verify
Check if Vulnerable:
Check package.json or node_modules/url-parse/package.json for version number. Versions below 1.5.9 are vulnerable.Check Version:
npm list url-parse | grep url-parseVerify Fix Applied:
Verify url-parse version is 1.5.9 or higher using 'npm list url-parse' command.📡 Detection & Monitoring
Log Indicators:
- Unusual URL patterns with special characters in authorization endpoints
- Failed authorization attempts followed by successful access with modified URLs
- Access to restricted resources from unexpected user contexts
Network Indicators:
- HTTP requests with manipulated URL parameters containing special characters or unexpected structures
- Requests bypassing normal authentication flows
SIEM Query:
source="web_server" AND (url="*@*" OR url="*#*" OR url="*?*" OR url="*&*") AND (status=200 OR status=302) AND resource="*/admin*" OR resource="*/restricted*"🔗 References
- https://github.com/unshiftio/url-parse/commit/0e3fb542d60ddbf6933f22eb9b1e06e25eaa5b63
- https://huntr.dev/bounties/57124ed5-4b68-4934-8325-2c546257f2e4
- https://lists.debian.org/debian-lts-announce/2023/02/msg00030.html
- https://security.netapp.com/advisory/ntap-20220325-0006/
- https://github.com/unshiftio/url-parse/commit/0e3fb542d60ddbf6933f22eb9b1e06e25eaa5b63
- https://huntr.dev/bounties/57124ed5-4b68-4934-8325-2c546257f2e4
- https://lists.debian.org/debian-lts-announce/2023/02/msg00030.html
- https://security.netapp.com/advisory/ntap-20220325-0006/
