Vulnerability Details CVE-2021-27292
ua-parser-js >= 0.7.14, fixed in 0.7.24, uses a regular expression which is vulnerable to denial of service. If an attacker sends a malicious User-Agent header, ua-parser-js will get stuck processing it for an extended period of time.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 32.2%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
- https://gist.github.com/b-c-ds/6941d80d6b4e694df4bc269493b7be76
- https://github.com/faisalman/ua-parser-js/commit/809439e20e273ce0d25c1d04e111dcf6011eb566
- https://github.com/pygments/pygments/commit/2e7e8c4a7b318f4032493773732754e418279a14
- https://gist.github.com/b-c-ds/6941d80d6b4e694df4bc269493b7be76
- https://github.com/faisalman/ua-parser-js/commit/809439e20e273ce0d25c1d04e111dcf6011eb566
- https://github.com/pygments/pygments/commit/2e7e8c4a7b318f4032493773732754e418279a14
Products affected by CVE-2021-27292
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cpe:2.3:a:ua-parser-js_project:ua-parser-js:0.7.14
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cpe:2.3:a:ua-parser-js_project:ua-parser-js:0.7.15
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cpe:2.3:a:ua-parser-js_project:ua-parser-js:0.7.16
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cpe:2.3:a:ua-parser-js_project:ua-parser-js:0.7.17
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cpe:2.3:a:ua-parser-js_project:ua-parser-js:0.7.18
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cpe:2.3:a:ua-parser-js_project:ua-parser-js:0.7.19
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cpe:2.3:a:ua-parser-js_project:ua-parser-js:0.7.20
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cpe:2.3:a:ua-parser-js_project:ua-parser-js:0.7.21
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cpe:2.3:a:ua-parser-js_project:ua-parser-js:0.7.22
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cpe:2.3:a:ua-parser-js_project:ua-parser-js:0.7.23