CVEvulnerability
CVE-2018-20164
5.3 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2019-02-13
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 5.3 MEDIUM — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-185
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.)
Affected configurations
• uaparser user agent parser-core (< 0.6.0)
Related
Weakness · CWE (1)
- CWE-185 Incorrect Regular Expression weakness
References
- https://github.com/ua-parser/uap-core/commit/010ccdc7303546cd22b9da687c29f4a996990014 Patch, Third Party Advisory
- https://github.com/ua-parser/uap-core/commit/156f7e12b215bddbaf3df4514c399d683e6cdadc Patch, Third Party Advisory
- https://github.com/ua-parser/uap-core/issues/332 github.com
- https://www.x41-dsec.de/lab/advisories/x41-2018-009-uaparser/ Exploit, Third Party Advisory
- https://github.com/ua-parser/uap-core/commit/010ccdc7303546cd22b9da687c29f4a996990014 Patch, Third Party Advisory
- https://github.com/ua-parser/uap-core/commit/156f7e12b215bddbaf3df4514c399d683e6cdadc Patch, Third Party Advisory
- https://github.com/ua-parser/uap-core/issues/332 github.com
- https://www.x41-dsec.de/lab/advisories/x41-2018-009-uaparser/ Exploit, Third Party Advisory