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    CVE-2009-1086

    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.

    Published:Mar 25, 2009
    Last Modified:Apr 23, 2026
    EPS:Mar 25, 2009
    EPSS Score:0.03405
    CVSS Score:6.4

    Affected Products

    Vendor
    Nlnetlabs
    Product
    Ldns

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2020-19860 (CVSS 6.5) — When ldns version 1.7.1 verifies a zone file, the ldns_rr_new_frm_str_internal function has a heap out of boun…
    CVE-2020-19861 (CVSS 7.5) — When a zone file in ldns 1.7.1 is parsed, the function ldns_nsec3_salt_data is too trusted for the length valu…
    CVE-2017-1000232 (CVSS 9.8) — A double-free vulnerability in str2host.c in ldns 1.7.0 have unspecified impact and attack vectors.…
    CVE-2017-1000231 (CVSS 9.8) — A double-free vulnerability in parse.c in ldns 1.7.0 have unspecified impact and attack vectors.…
    CVE-2014-3209 (CVSS 2.1) — The ldns-keygen tool in ldns 1.6.x uses the current umask to set the privileges of the private key, which migh…
    CVE-2011-3581 (CVSS 6.8) — Heap-based buffer overflow in the ldns_rr_new_frm_str_internal function in ldns before 1.6.11 allows remote at…

    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