UBUNTU-CVE-2018-9127

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    UBUNTU-CVE-2018-9127

    Published: 2 Apr 2018Last Modified: 22 Apr 2026
    Upstream:
    CVE-2018-9127

    Summary:

    Details: Botan 2.2.0 - 2.4.0 (fixed in 2.5.0) improperly handled wildcard certificates and could accept certain certificates as valid for hostnames when, under RFC 6125 rules, they should not match. This only affects certificates issued to the same domain as the host, so to impersonate a host one must already have a wildcard certificate matching other hosts in the same domain. For example, b*.example.com would match some hostnames that do not begin with a 'b' character.

    References: https://ubuntu.com/security/CVE-2018-9127, https://botan.randombit.net/security.html, https://www.cve.org/CVERecord?id=CVE-2018-9127

    Affected packages

    Package

    Name: botan

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    2.9.0-2
    2.9.0-2build1

    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
    UBUNTU-CVE-2018-9127 | CVE-DB