{"id":"CVE-2026-45747","aliases":["DEBIAN-CVE-2026-45747","EUVD-2026-75509","GHSA-vfc5-9844-rmhv","UBUNTU-CVE-2026-45747"],"status":"published","title":"Suricata lua/tls: null dereference in TlsGetCertInfo","description":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.16, the Lua TLS certificate information helper could dereference NULL certificate fields when a Lua script requested certificate information for TLS traffic where some certificate fields were absent. Crafted TLS traffic processed by a deployment using affected Lua TLS scripting could crash Suricata, resulting in denial of service. Version 7.0.16 contains a fix. As a workaround, avoid Lua scripts that call TLS certificate information helpers on untrusted traffic (`TlsGetCertInfo` function), or update scripts to handle missing certificate fields where possible.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.0042,"percentile":0.36716,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-476"],"published":"2026-09-10T14:17:44Z","modified":"2026-10-28T02:30:50Z","fixes":[{"ecosystem":"Debian:14","package":"suricata","fixed_in":["1:8.0.1-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:13","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.0.10-1","1:7.0.10-1+deb13u1","1:7.0.10-1+deb13u2","1:7.0.10-1+deb13u3","1:7.0.10-1+deb13u4","1:7.0.11-1","1:7.0.11-1~bpo13+1","1:8.0.0-1~exp1","1:8.0.0-1~exp2","1:8.0.0-1~exp4","1:8.0.0-1~exp5","1:8.0.1-1","1:8.0.1-2","1:8.0.1-3","1:8.0.1-3~bpo13+1","1:8.0.2-1","1:8.0.2-1~bpo13+1","1:8.0.3-1","1:8.0.3-1~bpo13+1","1:8.0.3-2~exp1","1:8.0.4-1","1:8.0.4-1~bpo13+1","1:8.0.5-1","1:8.0.5-1~bpo13+1","1:8.0.6-1","1:8.0.6-1~bpo13+1","1:8.0.7-1","1:8.0.7-1~bpo13+1","1:8.0.7-2~exp1"]},{"source":"osv","ecosystem":"Debian:14","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:8.0.1-1"}]}],"versions":["1:7.0.10-1","1:7.0.11-1","1:7.0.11-1~bpo13+1","1:8.0.0-1~exp1","1:8.0.0-1~exp2","1:8.0.0-1~exp4","1:8.0.0-1~exp5"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.8-1build1","2.0.9-1","2.0.10-1","2.0.10-2","2.0.11-1","3.0-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.2-2ubuntu3"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:6.0.4-2","1:6.0.4-3"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.0.0-2","1:7.0.2-1","1:7.0.2-1build1","1:7.0.3-1build1","1:7.0.3-1build3"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:8.0.3-1","1:8.0.5-1","1:8.0.6-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:7.0.10-1","1:8.0.1-3build1","1:8.0.2-1","1:8.0.2-1build1","1:8.0.3-1"]}],"products":[{"vendor":"oisf","product":"suricata"}],"references":[{"url":"https://github.com/OISF/suricata/security/advisories/GHSA-vfc5-9844-rmhv","tags":["x_refsource_CONFIRM","Mitigation","Vendor Advisory","advisory"]},{"url":"https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315","tags":["x_refsource_MISC","Release Notes","Vendor Advisory","web"]},{"url":"https://redmine.openinfosecfoundation.org/issues/6286","tags":["x_refsource_MISC","exploit","Exploit","Issue Tracking","Vendor Advisory","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45747.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45747","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-45747","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-45747","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-45747","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-45747","title":"Suricata lua/tls: null dereference in TlsGetCertInfo","description":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.16, the Lua TLS certificate information helper could dereference NULL certificate fields when a Lua script requested certificate information for TLS traffic where some certificate fields were absent. Crafted TLS traffic processed by a deployment using affected Lua TLS scripting could crash Suricata, resulting in denial of service. Version 7.0.16 contains a fix. As a workaround, avoid Lua scripts that call TLS certificate information helpers on untrusted traffic (`TlsGetCertInfo` function), or update scripts to handle missing certificate fields where possible.","status":"published","published":"2026-09-10T14:17:44.236Z","modified":"2026-09-10T16:26:18.836Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T13:46:32.755125Z"}],"euvd":[{"id":"EUVD-2026-75509","description":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.16, the Lua TLS certificate information helper could dereference NULL certificate fields when a Lua script requested certificate information for TLS traffic where some certificate fields were absent. Crafted TLS traffic processed by a deployment using affected Lua TLS scripting could crash Suricata, resulting in denial of service. Version 7.0.16 contains a fix. As a workaround, avoid Lua scripts that call TLS certificate information helpers on untrusted traffic (`TlsGetCertInfo` function), or update scripts to handle missing certificate fields where possible.","status":"published","published":"2026-09-10T14:17:44Z","modified":"2026-09-10T16:26:18Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T17:28:24.168535Z"}],"nvd":[{"id":"CVE-2026-45747","description":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.16, the Lua TLS certificate information helper could dereference NULL certificate fields when a Lua script requested certificate information for TLS traffic where some certificate fields were absent. Crafted TLS traffic processed by a deployment using affected Lua TLS scripting could crash Suricata, resulting in denial of service. Version 7.0.16 contains a fix. As a workaround, avoid Lua scripts that call TLS certificate information helpers on untrusted traffic (`TlsGetCertInfo` function), or update scripts to handle missing certificate fields where possible.","status":"published","published":"2026-09-10T15:17:34.997Z","modified":"2026-09-28T18:44:03.71Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:12:45.93749Z"}],"osv":[{"id":"CVE-2026-45747","title":"Suricata lua/tls: null dereference in TlsGetCertInfo","description":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.16, the Lua TLS certificate information helper could dereference NULL certificate fields when a Lua script requested certificate information for TLS traffic where some certificate fields were absent. Crafted TLS traffic processed by a deployment using affected Lua TLS scripting could crash Suricata, resulting in denial of service. Version 7.0.16 contains a fix. As a workaround, avoid Lua scripts that call TLS certificate information helpers on untrusted traffic (`TlsGetCertInfo` function), or update scripts to handle missing certificate fields where possible.","status":"published","published":"2026-09-10T14:17:44.236Z","modified":"2026-10-28T02:30:50.477013859Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T15:45:05.525666Z"},{"id":"DEBIAN-CVE-2026-45747","description":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.16, the Lua TLS certificate information helper could dereference NULL certificate fields when a Lua script requested certificate information for TLS traffic where some certificate fields were absent. Crafted TLS traffic processed by a deployment using affected Lua TLS scripting could crash Suricata, resulting in denial of service. Version 7.0.16 contains a fix. As a workaround, avoid Lua scripts that call TLS certificate information helpers on untrusted traffic (`TlsGetCertInfo` function), or update scripts to handle missing certificate fields where possible.","status":"published","published":"2026-09-10T15:17:34.997Z","modified":"2026-09-29T09:00:06.916220762Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:55.669088Z"},{"id":"UBUNTU-CVE-2026-45747","description":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.16, the Lua TLS certificate information helper could dereference NULL certificate fields when a Lua script requested certificate information for TLS traffic where some certificate fields were absent. Crafted TLS traffic processed by a deployment using affected Lua TLS scripting could crash Suricata, resulting in denial of service. Version 7.0.16 contains a fix. As a workaround, avoid Lua scripts that call TLS certificate information helpers on untrusted traffic (`TlsGetCertInfo` function), or update scripts to handle missing certificate fields where possible.","status":"published","published":"2026-09-10T15:17:00Z","modified":"2026-10-17T13:00:11.636995023Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:56:26.396868Z"}]}}