CVE-2012-3547

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    CVE-2012-3547

    Published: 18 Sept 2012Last Modified: 10 Apr 2026

    Summary:

    Details: Stack-based buffer overflow in the cbtls_verify function in FreeRADIUS 2.1.10 through 2.1.12, when using TLS-based EAP methods, allows remote attackers to cause a denial of service (server crash) and possibly execute arbitrary code via a long "not after" timestamp in a client certificate.

    References: http://freeradius.org/security.html, http://rhn.redhat.com/errata/RHSA-2012-1326.html, http://rhn.redhat.com/errata/RHSA-2012-1327.html, http://secunia.com/advisories/50484, http://secunia.com/advisories/50584, http://secunia.com/advisories/50637, http://secunia.com/advisories/50770, http://www.debian.org/security/2012/dsa-2546, http://www.mandriva.com/security/advisories?name=MDVSA-2012:159, http://www.pre-cert.de/advisories/PRE-SA-2012-06.txt, http://www.ubuntu.com/usn/USN-1585-1, http://archives.neohapsis.com/archives/bugtraq/2012-09/0043.html, http://lists.apple.com/archives/security-announce/2013/Oct/msg00006.html, http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090171.html, http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00023.html, http://osvdb.org/85325, http://www.openwall.com/lists/oss-security/2012/09/10/2, http://www.securityfocus.com/bid/55483, http://www.securitytracker.com/id?1027509, https://exchange.xforce.ibmcloud.com/vulnerabilities/78408

    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