Vulnerability Description
An issue was discovered in regex.yaml (aka regexes.yaml) in UA-Parser UAP-Core before 0.6.0. A Regular Expression Denial of Service (ReDoS) issue allows remote attackers to overload a server by setting the User-Agent header in an HTTP(S) request to a value containing a long digit string. (The UAP-Core project contains the vulnerability, propagating to all implementations.)
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Uaparser | User Agent Parser-Core | < 0.6.0 |
Related Weaknesses (CWE)
References
- https://github.com/ua-parser/uap-core/commit/010ccdc7303546cd22b9da687c29f4a9969PatchThird Party Advisory
- https://github.com/ua-parser/uap-core/commit/156f7e12b215bddbaf3df4514c399d683e6PatchThird Party Advisory
- https://github.com/ua-parser/uap-core/issues/332
- https://www.x41-dsec.de/lab/advisories/x41-2018-009-uaparser/ExploitThird Party Advisory
- https://github.com/ua-parser/uap-core/commit/010ccdc7303546cd22b9da687c29f4a9969PatchThird Party Advisory
- https://github.com/ua-parser/uap-core/commit/156f7e12b215bddbaf3df4514c399d683e6PatchThird Party Advisory
- https://github.com/ua-parser/uap-core/issues/332
- https://www.x41-dsec.de/lab/advisories/x41-2018-009-uaparser/ExploitThird Party Advisory
FAQ
What is CVE-2018-20164?
CVE-2018-20164 is a vulnerability with a CVSS score of 5.3 (MEDIUM). An issue was discovered in regex.yaml (aka regexes.yaml) in UA-Parser UAP-Core before 0.6.0. A Regular Expression Denial of Service (ReDoS) issue allows remote attackers to overload a server by settin...
How severe is CVE-2018-20164?
CVE-2018-20164 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-20164?
Check the references section above for vendor advisories and patch information. Affected products include: Uaparser User Agent Parser-Core.