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…

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.

Scores

EPSS (exploitation in 30 days)

3.5% · top 11% of all CVEs (5 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.4.

Weakness

• n/a
• CWE-399 (opens in a new tab)All about CWE-399 and its CVEs

Affected products

• n/a

  • affected n/a

References (8)

• 35013 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• [oss-security] 20090324 CVE id request: ldns (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• 34233 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• http://www.nlnetlabs.nl/svn/ldns/tags/release-1.5.0/Changelog (opens in a new tab)x_refsource_CONFIRMx_transferred
• 35065 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
• http://www.nlnetlabs.nl/bugs/show_bug.cgi?id=232 (opens in a new tab)x_refsource_MISCx_transferred
• SUSE-SR:2009:010 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• DSA-1795 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2009-1086](https://trackcve.app/badge/CVE-2009-1086.svg)](https://trackcve.app/cve/CVE-2009-1086)

Record last updated 7 Aug 2024, 04:57 UTC.