GHSA-2j9c-9vmv-7m39

    Dashboard / Vulnerabilities / GHSA-2j9c-9vmv-7m39

    GHSA-2j9c-9vmv-7m39

    Published: 31 Jul 2018Last Modified: 3 Dec 2024

    Summary: Missing Regex anchor in Rack-Cors allows malicious third party site to perform CORS request

    Details: Missing anchor in generated regex for rack-cors before 0.4.1 allows a malicious third-party site to perform CORS requests. If the configuration were intended to allow only the trusted `example.com` domain name and not the malicious `example.net` domain name, then `example.com.example.net` (as well as `example.com-example.net`) would be inadvertently allowed.

    References: https://nvd.nist.gov/vuln/detail/CVE-2017-11173, https://github.com/cyu/rack-cors/commit/42ebe6caa8e85ffa9c8a171bda668ba1acc7a5e6, https://github.com/cyu/rack-cors, https://packetstormsecurity.com/files/143345/rack-cors-Missing-Anchor.html, http://seclists.org/fulldisclosure/2017/Jul/22, http://www.debian.org/security/2017/dsa-3931

    Affected packages

    Package

    Name: rack-cors

    Purl: pkg:gem/rack-cors

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0.4.1

    Affected versions

    0.1.0
    0.1.1

    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