GO-2021-0227

    Dashboard / Vulnerabilities / GO-2021-0227

    GO-2021-0227

    Published: 17 Feb 2022Last Modified: 4 Feb 2026

    Summary: Panic on crafted authentication request message in golang.org/x/crypto/ssh

    Details: Clients can cause a panic in SSH servers. An attacker can craft an authentication request message for the “gssapi-with-mic” method which will cause NewServerConn to panic via a nil pointer dereference if ServerConfig.GSSAPIWithMICConfig is nil.

    References: https://go.dev/cl/278852, https://go.googlesource.com/crypto/+/8b5274cf687fd9316b4108863654cc57385531e8, https://groups.google.com/g/golang-announce/c/ouZIlBimOsE?pli=1

    Affected packages

    Package

    Name: golang.org/x/crypto

    Purl: pkg:golang/golang.org/x/crypto

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -0.0.0-20201216223049-8b5274cf687f

    Affected versions

    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
    GO-2021-0227 | CVE-DB