uap-core in an open-source npm package which contains the core of BrowserScope's original user agent string parser. In uap-core before version 0.11.0, some regexes are vulnerable to regular expression denial of service (REDoS) due to overlapping capture groups. This allows remote attackers to overload a server by setting the User-Agent header in an HTTP(S) request to maliciously crafted long strings. This is fixed in version 0.11.0. Downstream packages such as uap-python, uap-ruby etc which depend upon uap-core follow different version schemes.
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History
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published: 2021-02-16T17:45:16
Updated: 2024-08-03T18:09:15.054Z
Reserved: 2020-12-22T00:00:00
Link: CVE-2021-21317
Vulnrichment
No data.
NVD
Status : Modified
Published: 2021-02-16T18:15:12.583
Modified: 2024-11-21T05:48:00.547
Link: CVE-2021-21317
Redhat
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