Incorrect Regular Expression Affecting uap-core package, versions <20190213-1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN11-UAPCORE-518451
- published13 Feb 2019
- disclosed13 Feb 2019
Introduced: 13 Feb 2019
CVE-2018-20164 (opens in a new tab)How to fix?
Upgrade Debian:11 uap-core to version 20190213-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream uap-core package and not the uap-core package as distributed by Debian.
See How to fix? for Debian:11 relevant fixed versions and status.
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.)
References
- https://security-tracker.debian.org/tracker/CVE-2018-20164
- https://github.com/ua-parser/uap-core/commit/010ccdc7303546cd22b9da687c29f4a996990014
- https://github.com/ua-parser/uap-core/commit/156f7e12b215bddbaf3df4514c399d683e6cdadc
- https://github.com/ua-parser/uap-core/issues/332
- https://www.x41-dsec.de/lab/advisories/x41-2018-009-uaparser/