CVE-2018-20164

MEDIUM5.3EPSS 0.97%

uap-core Regular Expression Denial of Service issue

Published: 3/6/2019Modified: 11/8/2023

Also known as:GHSA-fx7m-j728-mjw3DEBIAN-CVE-2018-20164

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 packages (2)

Debian/uap-corefrom 0, < 20190213-1
npm/uap-corefrom 0, < 0.6.0

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	MEDIUM5.3	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References (7)

ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2018-20164
ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2018-20164
PATCHhttps://github.com/ua-parser/uap-core
WEBhttps://github.com/ua-parser/uap-core/commit/010ccdc7303546cd22b9da687c29f4a996990014
WEBhttps://github.com/ua-parser/uap-core/commit/156f7e12b215bddbaf3df4514c399d683e6cdadc
WEBhttps://github.com/ua-parser/uap-core/issues/332
WEBhttps://www.x41-dsec.de/lab/advisories/x41-2018-009-uaparser