{"id":"CVE-2023-29451","aliases":["DEBIAN-CVE-2023-29451","DLA-3538-1","EUVD-2023-33020","GHSA-5q7w-vc8g-r5vx"],"status":"published","title":"Denial of service caused by a bug in the JSON parser","description":"Specially crafted string can cause a buffer overrun in the JSON parser library leading to a crash of the Zabbix Server or a Zabbix Proxy.","severity":{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00783,"percentile":0.56288,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20","CWE-787"],"published":"2023-07-13T09:29:42Z","modified":"2026-10-26T18:02:40Z","fixes":[{"ecosystem":"Debian:13","package":"zabbix","fixed_in":["1:6.0.23+dfsg-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"zabbix","fixed_in":["1:6.0.23+dfsg-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"zabbix","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:6.0.14+dfsg-1","1:6.0.23+dfsg-1","1:6.0.23+dfsg-1~bpo12+1","1:6.0.24+dfsg-1","1:6.0.25+dfsg-1","1:6.0.29+dfsg-1","1:7.0.0+dfsg-1","1:7.0.0+dfsg-2","1:7.0.0+dfsg-2~bpo12+1","1:7.0.1+dfsg-1","1:7.0.1+dfsg-1~bpo12+1","1:7.0.10+dfsg-1","1:7.0.10+dfsg-2","1:7.0.2+dfsg-1","1:7.0.2+dfsg-1~bpo12+1","1:7.0.22+dfsg-1","1:7.0.22+dfsg-1.1","1:7.0.22+dfsg-1~bpo13+1","1:7.0.22+dfsg-1~deb13u1","1:7.0.27+dfsg-1","1:7.0.29+dfsg-1","1:7.0.29+dfsg-2","1:7.0.29+dfsg-2~bpo13+1","1:7.0.3+dfsg-1","1:7.0.5+dfsg-1","1:7.0.5+dfsg-1~bpo12+1","1:7.0.6+dfsg-1","1:7.0.9+dfsg-1","1:7.0.9+dfsg-1~bpo12+1"]},{"source":"osv","ecosystem":"Debian:13","package":"zabbix","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:6.0.23+dfsg-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"zabbix","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:6.0.23+dfsg-1"}]}]},{"source":"osv","ecosystem":"Debian:10","package":"zabbix","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:4.0.4+dfsg-1+deb10u2"}]}],"versions":["1:4.0.4+dfsg-1","1:4.0.4+dfsg-1+deb10u1"],"bundled":9}],"products":[{"vendor":"zabbix","product":"zabbix"}],"references":[{"url":"https://support.zabbix.com/browse/ZBX-22587","tags":["x_transferred","Vendor Advisory","advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2023/08/msg00027.html","tags":["x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-29451"},{"url":"https://github.com/advisories/GHSA-5q7w-vc8g-r5vx"},{"url":"https://security-tracker.debian.org/tracker/CVE-2023-29451","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-29451","title":"Denial of service caused by a bug in the JSON parser","description":"Specially crafted string can cause a buffer overrun in the JSON parser library leading to a crash of the Zabbix Server or a Zabbix Proxy.","status":"published","published":"2023-07-13T09:29:42.494Z","modified":"2025-02-13T16:49:18.15Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:35:28.218693Z"}],"euvd":[{"id":"EUVD-2023-33020","description":"Specially crafted string can cause a buffer overrun in the JSON parser library leading to a crash of the Zabbix Server or a Zabbix Proxy.","status":"published","published":"2023-07-13T09:29:42Z","modified":"2025-02-13T16:49:18Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"updated_at":"2026-11-03T00:03:50.947767Z"}],"ghsa":[{"id":"GHSA-5q7w-vc8g-r5vx","title":"Specially crafted string can cause a buffer overrun in the JSON parser library leading to a crash...","description":"Specially crafted string can cause a buffer overrun in the JSON parser library leading to a crash of the Zabbix Server or a Zabbix Proxy.","status":"published","published":"2023-07-13T12:30:26Z","modified":"2024-04-04T06:06:51Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-20","CWE-787"],"updated_at":"2026-11-02T14:56:39.294815Z"}],"nvd":[{"id":"CVE-2023-29451","description":"Specially crafted string can cause a buffer overrun in the JSON parser library leading to a crash of the Zabbix Server or a Zabbix Proxy.","status":"published","published":"2023-07-13T10:15:09.137Z","modified":"2026-06-17T05:50:05.063Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"secondary"},{"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":"primary"}],"cwes":["CWE-20","CWE-787"],"updated_at":"2026-11-02T14:08:15.91037Z"}],"osv":[{"id":"CVE-2023-29451","description":"Specially crafted string can cause a buffer overrun in the JSON parser library leading to a crash of the Zabbix Server or a Zabbix Proxy.","status":"published","published":"2023-07-13T10:15:09.137Z","modified":"2026-10-24T10:30:49.538847912Z","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":"2026-11-02T15:44:31.468318Z"},{"id":"DEBIAN-CVE-2023-29451","description":"Specially crafted string can cause a buffer overrun in the JSON parser library leading to a crash of the Zabbix Server or a Zabbix Proxy.","status":"published","published":"2023-07-13T10:15:09.137Z","modified":"2026-10-26T18:02:40.107446171Z","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":"2026-11-02T15:45:39.679062Z"},{"id":"DLA-3538-1","title":"zabbix - security update","status":"published","published":"2023-08-22T00:00:00Z","modified":"2026-03-09T01:18:45.971346Z","updated_at":"2026-11-02T15:46:11.734021Z"}]}}