CVE-2009-1086

Severity: medium (CVSS 6.4 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2009-03-25 · updated 2026-06-16
Weakness: CWE-399

Description

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.

Affected products

NLnet Labs ldns: 1.4.0, 1.4.1

References

http://lists.opensuse.org/opensuse-security-announce/2009-05/msg00000.html
http://secunia.com/advisories/35013
http://secunia.com/advisories/35065
http://www.debian.org/security/2009/dsa-1795
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
http://lists.opensuse.org/opensuse-security-announce/2009-05/msg00000.html
http://secunia.com/advisories/35013
http://secunia.com/advisories/35065
http://www.debian.org/security/2009/dsa-1795

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