CVE-2018-20164

    Dashboard / Vulnerabilities / CVE-2018-20164

    CVE-2018-20164

    Published: 13 Feb 2019Last Modified: 8 Jul 2026

    Summary:

    Details: 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://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/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -010ccdc7303546cd22b9da687c29f4a996990014

    Affected versions

    v0.3.4
    v0.3.2
    v0.3.1
    v0.3.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High