{"id":"CVE-2026-45768","aliases":["DEBIAN-CVE-2026-45768","EUVD-2026-75786","GHSA-cr4x-w4c4-57p7","UBUNTU-CVE-2026-45768","openSUSE-SU-2026:10885-1"],"status":"published","title":"Suricata ldap: unbounded responses per transaction can lead to resource exhaustion","description":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to version 8.0.5, LDAP transaction state could store an unbounded number of responses. Because LDAP can be processed over UDP, crafted traffic may cause Suricata to consume excessive memory, potentially resulting in denial of service. Version 8.0.5 contains a fix. As a workaround, disable LDAP application-layer parsing where it is not required. Alternatively, use a rule like `alert ldap any any -\u003e any any (sid: 1; ldap.responses.count: \u003e1024; bypass;)`.","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":"2026-11-09","score":0.007,"percentile":0.53442,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400","CWE-770"],"published":"2026-05-28T00:00:00Z","modified":"2026-10-28T02:30:32Z","fixes":[{"ecosystem":"Debian:14","package":"suricata","fixed_in":["1:8.0.5-1"],"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":"1:8.0.5-1"}]}],"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","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~bpo13+1"]},{"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:26.04: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"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"suricata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.5-1.1"}]}],"bundled":15}],"products":[{"vendor":"oisf","product":"suricata"}],"references":[{"url":"https://github.com/OISF/suricata/security/advisories/GHSA-cr4x-w4c4-57p7","tags":["x_refsource_CONFIRM","Third Party Advisory","advisory","report"]},{"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","report"]},{"url":"https://redmine.openinfosecfoundation.org/issues/8405","tags":["x_refsource_MISC","Permissions Required","web","report"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45768.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45768","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-45768","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-45768","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-45768","tags":["report"]},{"url":"https://redmine.openinfosecfoundation.org/issues/8406","tags":["report"]},{"url":"https://github.com/OISF/suricata/commit/82cf3d67b1f9fe963c372303ae36551146fee890","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45751","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45752","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45759","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45761","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45762","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45763","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45764","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45765","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45766","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45767","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45768","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45769","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-45770","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-46352","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-46387","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-45768","title":"Suricata ldap: unbounded responses per transaction can lead to resource exhaustion","description":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to version 8.0.5, LDAP transaction state could store an unbounded number of responses. Because LDAP can be processed over UDP, crafted traffic may cause Suricata to consume excessive memory, potentially resulting in denial of service. Version 8.0.5 contains a fix. As a workaround, disable LDAP application-layer parsing where it is not required. Alternatively, use a rule like `alert ldap any any -\u003e any any (sid: 1; ldap.responses.count: \u003e1024; bypass;)`.","status":"published","published":"2026-09-10T21:37:17.659Z","modified":"2026-09-11T20:31:43.085Z","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-400","CWE-770"],"updated_at":"2026-11-02T13:46:43.922571Z"}],"euvd":[{"id":"EUVD-2026-75786","description":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to version 8.0.5, LDAP transaction state could store an unbounded number of responses. Because LDAP can be processed over UDP, crafted traffic may cause Suricata to consume excessive memory, potentially resulting in denial of service. Version 8.0.5 contains a fix. As a workaround, disable LDAP application-layer parsing where it is not required. Alternatively, use a rule like `alert ldap any any -\u003e any any (sid: 1; ldap.responses.count: \u003e1024; bypass;)`.","status":"published","published":"2026-09-10T21:37:17Z","modified":"2026-09-11T20:31:43Z","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":"2026-11-02T17:28:21.886667Z"}],"nvd":[{"id":"CVE-2026-45768","description":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to version 8.0.5, LDAP transaction state could store an unbounded number of responses. Because LDAP can be processed over UDP, crafted traffic may cause Suricata to consume excessive memory, potentially resulting in denial of service. Version 8.0.5 contains a fix. As a workaround, disable LDAP application-layer parsing where it is not required. Alternatively, use a rule like `alert ldap any any -\u003e any any (sid: 1; ldap.responses.count: \u003e1024; bypass;)`.","status":"published","published":"2026-09-10T22:16:56.827Z","modified":"2026-09-16T18:31:31.26Z","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-400","CWE-770"],"updated_at":"2026-11-02T14:12:46.271848Z"}],"osv":[{"id":"CVE-2026-45768","title":"Suricata ldap: unbounded responses per transaction can lead to resource exhaustion","description":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to version 8.0.5, LDAP transaction state could store an unbounded number of responses. Because LDAP can be processed over UDP, crafted traffic may cause Suricata to consume excessive memory, potentially resulting in denial of service. Version 8.0.5 contains a fix. As a workaround, disable LDAP application-layer parsing where it is not required. Alternatively, use a rule like `alert ldap any any -\u003e any any (sid: 1; ldap.responses.count: \u003e1024; bypass;)`.","status":"published","published":"2026-09-10T21:37:17.659Z","modified":"2026-10-28T02:30:32.158871197Z","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-400","CWE-770"],"updated_at":"2026-11-02T15:45:05.525666Z"},{"id":"DEBIAN-CVE-2026-45768","description":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to version 8.0.5, LDAP transaction state could store an unbounded number of responses. Because LDAP can be processed over UDP, crafted traffic may cause Suricata to consume excessive memory, potentially resulting in denial of service. Version 8.0.5 contains a fix. As a workaround, disable LDAP application-layer parsing where it is not required. Alternatively, use a rule like `alert ldap any any -\u003e any any (sid: 1; ldap.responses.count: \u003e1024; bypass;)`.","status":"published","published":"2026-09-10T22:16:56.827Z","modified":"2026-10-01T03:03:14.683145649Z","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-2026-45768","description":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to version 8.0.5, LDAP transaction state could store an unbounded number of responses. Because LDAP can be processed over UDP, crafted traffic may cause Suricata to consume excessive memory, potentially resulting in denial of service. Version 8.0.5 contains a fix. As a workaround, disable LDAP application-layer parsing where it is not required. Alternatively, use a rule like `alert ldap any any -\u003e any any (sid: 1; ldap.responses.count: \u003e1024; bypass;)`.","status":"published","published":"2026-09-10T22:16:00Z","modified":"2026-09-16T11:34:30Z","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"},{"id":"openSUSE-SU-2026:10885-1","title":"libsuricata8_0_5-8.0.5-1.1 on GA media","description":"These are all security issues fixed in the libsuricata8_0_5-8.0.5-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-05-28T00:00:00Z","modified":"2026-05-29T08:15:06.445006444Z","updated_at":"2026-11-02T16:58:38.95195Z"}]}}