UBUNTU-CVE-2012-2123

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    UBUNTU-CVE-2012-2123

    Published: 19 Apr 2012Last Modified: 4 Feb 2026
    Upstream:
    CVE-2012-2123
    Aliases:
    USN-1445-1
    USN-1448-1
    USN-1452-1

    Summary:

    Details: The cap_bprm_set_creds function in security/commoncap.c in the Linux kernel before 3.3.3 does not properly handle the use of file system capabilities (aka fcaps) for implementing a privileged executable file, which allows local users to bypass intended personality restrictions via a crafted application, as demonstrated by an attack that uses a parent process to disable ASLR.

    References: https://ubuntu.com/security/CVE-2012-2123, http://www.openwall.com/lists/oss-security/2012/04/20/6, https://ubuntu.com/security/notices/USN-1445-1, https://ubuntu.com/security/notices/USN-1448-1, https://ubuntu.com/security/notices/USN-1452-1, https://ubuntu.com/security/notices/USN-1453-1, https://ubuntu.com/security/notices/USN-1455-1, https://ubuntu.com/security/notices/USN-1457-1, https://ubuntu.com/security/notices/USN-1459-1, https://ubuntu.com/security/notices/USN-1460-1, https://ubuntu.com/security/notices/USN-1470-1, https://ubuntu.com/security/notices/USN-1530-1, https://www.cve.org/CVERecord?id=CVE-2012-2123

    Affected packages

    Package

    Name: linux

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.11.0-12.19

    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