CVE-2018-20164
uap-core Regular Expression Denial of Service issue
5.3
MEDIUM
CVSS 3.1
EPSS 0.97%
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.)
How to fix CVE-2018-20164
To remediate CVE-2018-20164, upgrade the affected package to a fixed version below.
- —upgrade to 20190213-1 or later
- —upgrade to 0.6.0 or later
Is CVE-2018-20164 being exploited?
Low — EPSS is 1.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 20190213-1
- from 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 |