Read the docs
TI-2009-01040 Aliases CVE-2009-1086GHSA-5957-cmgf-chq8

Heap-based buffer overflow in the ldns_rr_new_frm_str_internal function in ldns 1.4.x…

Priority LOW 35CWE-399Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · Partial · Partial
Fix status
No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.03473 89th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:nlnetlabs:ldns:1.4.0:*:*:*:*:*:*:*1.4.0VulnerableNLNETLABS
cpe:2.3:a:nlnetlabs:ldns:1.4.1:*:*:*:*:*:*:*1.4.1VulnerableNLNETLABS
  • cpe:2.3:a:nlnetlabs:ldns:1.4.0:*:*:*:*:*:*:* Versions 1.4.0 Vulnerable ·NLNETLABS
  • cpe:2.3:a:nlnetlabs:ldns:1.4.1:*:*:*:*:*:*:* Versions 1.4.1 Vulnerable ·NLNETLABS

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2009-1086
  2. 2026-10-03 Alias added: GHSA-5957-cmgf-chq8

References

Advisory 2

Other 3

  • TI-2017-14547 A double-free vulnerability in parse.c in ldns 1.7.0 have unspecified impact and attack vectors. CVSS 3.0CRITICAL 9.8
  • TI-2017-14548 A double-free vulnerability in str2host.c in ldns 1.7.0 have unspecified impact and attack vectors. CVSS 3.0CRITICAL 9.8
  • TI-2011-03157 Heap-based buffer overflow in the ldns_rr_new_frm_str_internal function in ldns before… CVSS 2.0MEDIUM 6.8
  • TI-2020-13719 When a zone file in ldns 1.7.1 is parsed, the function ldns_nsec3_salt_data is too… CVSS 3.1HIGH 7.5
  • TI-2026-09311 Insufficient verification that responses belong to a query CVSS 4.0HIGH 8.2
  • TI-2020-13718 When ldns version 1.7.1 verifies a zone file, the ldns_rr_new_frm_str_internal function… CVSS 3.1MEDIUM 6.5
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences