{"id":"CVE-2026-101339","state":"PUBLISHED","title":"Stack overwrite from a specially crafted and formatted HIP RR","description":"A HIP resource record that fills the RDATA near or at is limit, and has another dname RDATA field (a HIP Rendezvous server) can overwrite the stack with up to 191 bytes of attacker controlled data.  Zone files which are written out by NSD itself, such as for zones for which the NSD instance is secondary, will not be formatted like this. The zone file must be fed to NSD directly, (but it could come, for example, from an operator controlled provisioning system).","publishedAt":"2026-10-14T10:56:37.808Z","updatedAt":"2026-10-14T14:08:51.522Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"NLnet Labs"},"assigner":"NLnet Labs","products":["NLnet Labs NSD"],"affected":[{"vendor":"NLnet Labs","product":"NSD","defaultStatus":"unaffected","versions":[{"version":"4.10.0","status":"affected","lessThan":"4.15.3","versionType":"semver"}]}],"references":["https://www.nlnetlabs.nl/downloads/nsd/CVE-2026-101339.txt"],"weaknesses":["CWE-121"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/101xxx/CVE-2026-101339.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-101339","state":"PUBLISHED","datePublished":"2026-10-14T10:56:37.808Z","dateUpdated":"2026-10-14T14:08:51.522Z","assignerShortName":"NLnet Labs","assignerOrgId":"206fc3a0-e175-490b-9eaa-a5738056c9f6","dateReserved":"2026-09-28T14:39:03.778Z"},"containers":{"cna":{"title":"Stack overwrite from a specially crafted and formatted HIP RR","descriptions":[{"lang":"en","value":"A HIP resource record that fills the RDATA near or at is limit, and has another dname RDATA field (a HIP Rendezvous server) can overwrite the stack with up to 191 bytes of attacker controlled data.  Zone files which are written out by NSD itself, such as for zones for which the NSD instance is secondary, will not be formatted like this. The zone file must be fed to NSD directly, (but it could come, for example, from an operator controlled provisioning system)."}],"affected":[{"vendor":"NLnet Labs","product":"NSD","defaultStatus":"unaffected","versions":[{"version":"4.10.0","status":"affected","lessThan":"4.15.3","versionType":"semver"}]}],"references":[{"url":"https://www.nlnetlabs.nl/downloads/nsd/CVE-2026-101339.txt","tags":["vendor-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"When reading zone files, a specially crafted and formatted HIP resource record can cause an out of bounds stack overwrite which can be exploited for execution of arbitrary commands."}],"cvssV4_0":{"version":"4.0","baseScore":8.7,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-121","lang":"en","description":"CWE-121 Stack-based Buffer Overflow","type":"CWE"}]}],"providerMetadata":{"shortName":"NLnet Labs","orgId":"206fc3a0-e175-490b-9eaa-a5738056c9f6","dateUpdated":"2026-10-14T10:56:37.808Z"},"solutions":[{"lang":"en","value":"This issue is fixed in 4.15.3 and all later versions."}],"credits":[{"lang":"en","type":"finder","value":"Qifan Zhang from Palo Alto Networks"},{"lang":"en","type":"finder","value":"Alwaleed Ashi (LXR) <waleed.9998@hotmail.com>"}],"timeline":[{"time":"2026-08-13T08:12:00.000Z","lang":"en","value":"Issue reported by Qifan Zhang"},{"time":"2026-08-13T08:12:00.000Z","lang":"en","value":"Issue reported by Alwaleed Ashi (LXR)"},{"time":"2026-09-22T12:55:00.000Z","lang":"en","value":"NLnet Labs shares patch with Alwaleed Ashi (LXR)"},{"time":"2026-09-23T15:40:00.000Z","lang":"en","value":"Alwaleed Ashi (LXR) verifies patch"},{"time":"2026-09-27T15:03:00.000Z","lang":"en","value":"NLnet Labs shares patch with Qifan Zhang"},{"time":"2026-09-28T21:21:00.000Z","lang":"en","value":"Qifan Zhang verifies patch"},{"time":"2026-10-14T12:00:00.000Z","lang":"en","value":"Fix released with version 4.15.3"}],"datePublic":"2026-10-14T12:00:00.000Z","x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-14T14:08:37.264291Z","id":"CVE-2026-101339","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-14T14:08:51.522Z"}}]}}}