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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWZ4N20tajcyOC1tancz

uap-core Regular Expression Denial of Service issue

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.)

Permalink: https://github.com/advisories/GHSA-fx7m-j728-mjw3
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWZ4N20tajcyOC1tancz
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: over 5 years ago
Updated: almost 2 years ago

CVSS Score: 5.3
CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS Percentage: 0.00776
EPSS Percentile: 0.81625

Identifiers: GHSA-fx7m-j728-mjw3, CVE-2018-20164
References:

• https://nvd.nist.gov/vuln/detail/CVE-2018-20164
• https://github.com/ua-parser/uap-core/issues/332
• https://github.com/ua-parser/uap-core/commit/010ccdc7303546cd22b9da687c29f4a996990014
• https://github.com/ua-parser/uap-core/commit/156f7e12b215bddbaf3df4514c399d683e6cdadc
• https://www.x41-dsec.de/lab/advisories/x41-2018-009-uaparser/
• https://github.com/advisories/GHSA-fx7m-j728-mjw3

Repository: https://github.com/ua-parser/uap-core
Blast Radius: 7.7

Affected Packages