CVE-2011-4623

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    CVE-2011-4623

    Published: 25 Sept 2012Last Modified: 10 Apr 2026

    Summary:

    Details: Integer overflow in the rsCStrExtendBuf function in runtime/stringbuf.c in the imfile module in rsyslog 4.x before 4.6.6, 5.x before 5.7.4, and 6.x before 6.1.4 allows local users to cause a denial of service (daemon hang) via a large file, which triggers a heap-based buffer overflow.

    References: http://secunia.com/advisories/45848, http://secunia.com/advisories/47698, http://www.ubuntu.com/usn/USN-1338-1, http://www.ubuntu.com/usn/USN-1338-1, http://bugzilla.adiscon.com/show_bug.cgi?id=221, https://bugzilla.redhat.com/show_bug.cgi?id=769822, http://git.adiscon.com/?p=rsyslog.git%3Ba=commit%3Bh=6bad782f154b7f838c7371bf99c13f6dc4ec4101, http://rsyslog.com/changelog-for-4-6-6-v4-stable/, http://rsyslog.com/changelog-for-5-7-4-v5-beta/, http://rsyslog.com/changelog-for-6-1-4-devel/, http://www.openwall.com/lists/oss-security/2011/12/22/2, http://www.securityfocus.com/bid/51171, http://www.securitytracker.com/id?1026556

    Affected packages

    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