CVE-2020-5243

Published February 21st, 2020

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CVSS v3

5.7

MEDIUM

CVSS v2

MEDIUM

Affected

PROJECT

Description

uap-core before 0.7.3 is vulnerable to a denial of service attack when processing crafted User-Agent strings. 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 has been patched in uap-core 0.7.3.

ua-parser/uap-core

The regex file necessary to build language ports of Browserscope's user agent parser.

GitHub

819