CVE-2009-1086

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    CVE-2009-1086

    Published: 25 Mar 2009Last Modified: 10 Apr 2026

    Summary:

    Details: Heap-based buffer overflow in the ldns_rr_new_frm_str_internal function in ldns 1.4.x allows remote attackers to cause a denial of service (memory corruption) and possibly execute arbitrary code via a DNS resource record (RR) with a long (1) class field (clas variable) and possibly (2) TTL field.

    References: http://secunia.com/advisories/35013, http://secunia.com/advisories/35065, http://www.debian.org/security/2009/dsa-1795, http://lists.opensuse.org/opensuse-security-announce/2009-05/msg00000.html, http://www.nlnetlabs.nl/bugs/show_bug.cgi?id=232, http://www.nlnetlabs.nl/svn/ldns/tags/release-1.5.0/Changelog, http://www.openwall.com/lists/oss-security/2009/03/24/4, http://www.securityfocus.com/bid/34233

    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