UBUNTU-CVE-2021-22924

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    UBUNTU-CVE-2021-22924

    Published: 21 Jul 2021Last Modified: 20 Aug 2026
    Upstream:
    CVE-2021-22924
    Aliases:
    USN-5021-1

    Summary:

    Details: libcurl keeps previously used connections in a connection pool for subsequenttransfers to reuse, if one of them matches the setup.Due to errors in the logic, the config matching function did not take 'issuercert' into account and it compared the involved paths *case insensitively*,which could lead to libcurl reusing wrong connections.File paths are, or can be, case sensitive on many systems but not all, and caneven vary depending on used file systems.The comparison also didn't include the 'issuer cert' which a transfer can setto qualify how to verify the server certificate.

    References: https://ubuntu.com/security/CVE-2021-22924, https://curl.se/docs/CVE-2021-22924.html, https://ubuntu.com/security/notices/USN-5021-1, https://www.cve.org/CVERecord?id=CVE-2021-22924

    Affected packages

    Package

    Name: curl

    Purl: pkg:deb/ubuntu/curl?arch=source&distro=esm-infra-legacy%2Ftrusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    7.32.0-1ubuntu1

    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-2021-22924 | CVE-DB