CVE-2011-4079

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    CVE-2011-4079

    Published: 27 Oct 2011Last Modified: 10 Apr 2026

    Summary:

    Details: Off-by-one error in the UTF8StringNormalize function in OpenLDAP 2.4.26 and earlier allows remote attackers to cause a denial of service (slapd crash) via a zero-length string that triggers a heap-based buffer overflow, as demonstrated using an empty postalAddressAttribute value in an LDIF entry.

    References: http://secunia.com/advisories/46599, http://security.gentoo.org/glsa/glsa-201406-36.xml, http://www.ubuntu.com/usn/USN-1266-1, https://bugzilla.redhat.com/show_bug.cgi?id=749324, http://www.openldap.org/devel/gitweb.cgi?p=openldap.git%3Ba=commitdiff%3Bh=507238713b71208ec4f262f312cb495a302df9e9, http://www.openldap.org/its/index.cgi/Software%20Bugs?id=7059%3Bselectid=7059, http://www.openwall.com/lists/oss-security/2011/10/26/5, http://www.openwall.com/lists/oss-security/2011/10/26/9, http://www.securityfocus.com/bid/50384, https://exchange.xforce.ibmcloud.com/vulnerabilities/70991

    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