CVE-2022-31055

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    CVE-2022-31055

    Published: 13 Jun 2022Last Modified: 12 Aug 2026

    Summary: Improper Access Control in kctf

    Details: kCTF is a Kubernetes-based infrastructure for capture the flag (CTF) competitions. Prior to version 1.6.0, the kctf cluster set-src-ip-ranges was broken and allowed traffic from any IP. The problem has been patched in v1.6.0. As a workaround, those who want to test challenges privately can mark them as `public: false` and use `kctf chal debug port-forward` to connect.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/31xxx/CVE-2022-31055.json, https://github.com/google/kctf/security/advisories/GHSA-4g2v-6qc6-6jv5, https://nvd.nist.gov/vuln/detail/CVE-2022-31055, https://github.com/google/kctf/commit/8cf050be974fcc2fd8aa136701f9a66f2b2a5202, https://github.com/google/kctf/pull/371

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -8cf050be974fcc2fd8aa136701f9a66f2b2a5202

    Affected versions

    v1.5.2
    v1.5.1
    v1.5.0

    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
    CVE-2022-31055 | CVE-DB