DEBIAN-CVE-2012-4561

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    DEBIAN-CVE-2012-4561

    Published: 30 Nov 2012Last Modified: 5 Sept 2026
    Upstream:
    CVE-2012-4561

    Summary:

    Details: The (1) publickey_make_dss, (2) publickey_make_rsa, (3) signature_from_string, (4) ssh_do_sign, and (5) ssh_sign_session_id functions in keys.c in libssh before 0.5.3 free "an invalid pointer on an error path," which might allow remote attackers to cause a denial of service (crash) via unspecified vectors.

    References: https://security-tracker.debian.org/tracker/CVE-2012-4561

    Affected packages

    Package

    Name: libssh

    Purl: pkg:deb/debian/libssh?arch=source&distro=bookworm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0.5.3-1

    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