Vulnerability Details CVE-2018-20164
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.)
Exploit prediction scoring system (EPSS) score
EPSS Score 0.009
EPSS Ranking 74.7%
CVSS Severity
CVSS v3 Score 5.3
CVSS v2 Score 5.0
References
- https://github.com/ua-parser/uap-core/commit/010ccdc7303546cd22b9da687c29f4a996990014
- https://github.com/ua-parser/uap-core/commit/156f7e12b215bddbaf3df4514c399d683e6cdadc
- https://github.com/ua-parser/uap-core/issues/332
- https://www.x41-dsec.de/lab/advisories/x41-2018-009-uaparser/
- https://github.com/ua-parser/uap-core/commit/010ccdc7303546cd22b9da687c29f4a996990014
- https://github.com/ua-parser/uap-core/commit/156f7e12b215bddbaf3df4514c399d683e6cdadc
- https://github.com/ua-parser/uap-core/issues/332
- https://www.x41-dsec.de/lab/advisories/x41-2018-009-uaparser/
Products affected by CVE-2018-20164
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cpe:2.3:a:uaparser:user_agent_parser-core:0.1.0
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cpe:2.3:a:uaparser:user_agent_parser-core:0.1.1
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cpe:2.3:a:uaparser:user_agent_parser-core:0.1.2
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cpe:2.3:a:uaparser:user_agent_parser-core:0.2.0
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cpe:2.3:a:uaparser:user_agent_parser-core:0.2.1
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cpe:2.3:a:uaparser:user_agent_parser-core:0.2.2
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cpe:2.3:a:uaparser:user_agent_parser-core:0.2.3
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cpe:2.3:a:uaparser:user_agent_parser-core:0.2.4
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cpe:2.3:a:uaparser:user_agent_parser-core:0.3.0
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cpe:2.3:a:uaparser:user_agent_parser-core:0.3.1
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cpe:2.3:a:uaparser:user_agent_parser-core:0.3.2
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cpe:2.3:a:uaparser:user_agent_parser-core:0.3.4
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cpe:2.3:a:uaparser:user_agent_parser-core:0.4.0
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cpe:2.3:a:uaparser:user_agent_parser-core:0.5.0