CVE-2013-4788

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    CVE-2013-4788

    Published: 4 Oct 2013Last Modified: 16 Apr 2026

    Summary:

    Details: The PTR_MANGLE implementation in the GNU C Library (aka glibc or libc6) 2.4, 2.17, and earlier, and Embedded GLIBC (EGLIBC) does not initialize the random value for the pointer guard, which makes it easier for context-dependent attackers to control execution flow by leveraging a buffer-overflow vulnerability in an application and using the known zero value pointer guard to calculate a pointer address.

    References: http://www.mandriva.com/security/advisories?name=MDVSA-2013:283, http://www.mandriva.com/security/advisories?name=MDVSA-2013:284, https://security.gentoo.org/glsa/201503-04, http://hmarco.org/bugs/CVE-2013-4788.html, http://www.openwall.com/lists/oss-security/2013/07/15/9, http://hmarco.org/bugs/CVE-2013-4788.html, http://www.openwall.com/lists/oss-security/2013/07/15/9, http://seclists.org/fulldisclosure/2015/Sep/23, http://www.securityfocus.com/bid/61183

    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
    CVE-2013-4788 | CVE-DB