{"id":"CVE-2024-39529","aliases":["EUVD-2024-38055","GHSA-h69r-jw3j-854f"],"status":"published","title":"Junos OS: SRX Series: If DNS traceoptions are configured in a DGA or tunnel detection scenario specific DNS traffic leads to a PFE crash","description":"A Use of Externally-Controlled Format String vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).\n\n\n\nIf DNS Domain Generation Algorithm (DGA) detection or tunnel detection, and DNS-filtering traceoptions are configured, and specific valid transit DNS traffic is received this causes a PFE crash and restart, leading to a Denial of Service.\n\nThis issue affects Junos OS: \n  *  All versions before 21.4R3-S6,\n  *  22.2 versions before 22.2R3-S3,\n  *  22.3 versions before 22.3R3-S3,\n  *  22.4 versions before 22.4R3,\n  *  23.2 versions before 23.2R2.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00476,"percentile":0.41461,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-134"],"published":"2024-07-11T16:03:26Z","modified":"2026-06-17T07:42:08Z","products":[{"vendor":"juniper","product":"junos"},{"vendor":"juniper","product":"junos_os"},{"vendor":"juniper networks","product":"junos os"}],"references":[{"url":"https://supportportal.juniper.net/JSA82988","tags":["vendor-advisory","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-39529"},{"url":"https://github.com/advisories/GHSA-h69r-jw3j-854f"}],"sources":{"cve":[{"id":"CVE-2024-39529","title":"Junos OS: SRX Series: If DNS traceoptions are configured in a DGA or tunnel detection scenario specific DNS traffic leads to a PFE crash","description":"A Use of Externally-Controlled Format String vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).\n\n\n\nIf DNS Domain Generation Algorithm (DGA) detection or tunnel detection, and DNS-filtering traceoptions are configured, and specific valid transit DNS traffic is received this causes a PFE crash and restart, leading to a Denial of Service.\n\nThis issue affects Junos OS: \n  *  All versions before 21.4R3-S6,\n  *  22.2 versions before 22.2R3-S3,\n  *  22.3 versions before 22.3R3-S3,\n  *  22.4 versions before 22.4R3,\n  *  23.2 versions before 23.2R2.","status":"published","published":"2024-07-11T16:03:26.98Z","modified":"2024-08-02T04:26:15.162Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L","level":"high","assessor":"cna"},{"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-134"],"updated_at":"2026-11-02T14:34:19.28149Z"}],"euvd":[{"id":"EUVD-2024-38055","description":"A Use of Externally-Controlled Format String vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).\n\n\n\nIf DNS Domain Generation Algorithm (DGA) detection or tunnel detection, and DNS-filtering traceoptions are configured, and specific valid transit DNS traffic is received this causes a PFE crash and restart, leading to a Denial of Service.\n\nThis issue affects Junos OS: \n  *  All versions before 21.4R3-S6,\n  *  22.2 versions before 22.2R3-S3,\n  *  22.3 versions before 22.3R3-S3,\n  *  22.4 versions before 22.4R3,\n  *  23.2 versions before 23.2R2.","status":"published","published":"2024-07-11T16:03:26Z","modified":"2024-08-02T04:26:15Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L","level":"high"}],"updated_at":"2026-11-03T03:50:18.019857Z"}],"ghsa":[{"id":"GHSA-h69r-jw3j-854f","title":"A Use of Externally-Controlled Format String vulnerability in the Packet Forwarding Engine (PFE)...","description":"A Use of Externally-Controlled Format String vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).\n\n\n\nIf DNS Domain Generation Algorithm (DGA) detection or tunnel detection, and DNS-filtering traceoptions are configured, and specific valid transit DNS traffic is received this causes a PFE crash and restart, leading to a Denial of Service.\n\nThis issue affects Junos OS: \n  *  All versions before 21.4R3-S6,\n  *  22.2 versions before 22.2R3-S3,\n  *  22.3 versions before 22.3R3-S3,\n  *  22.4 versions before 22.4R3,\n  *  23.2 versions before 23.2R2.","status":"published","published":"2024-07-11T18:31:13Z","modified":"2024-07-31T05:03:17Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"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-134"],"updated_at":"2026-11-02T14:57:45.682811Z"}],"nvd":[{"id":"CVE-2024-39529","description":"A Use of Externally-Controlled Format String vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).\n\n\n\nIf DNS Domain Generation Algorithm (DGA) detection or tunnel detection, and DNS-filtering traceoptions are configured, and specific valid transit DNS traffic is received this causes a PFE crash and restart, leading to a Denial of Service.\n\nThis issue affects Junos OS: \n  *  All versions before 21.4R3-S6,\n  *  22.2 versions before 22.2R3-S3,\n  *  22.3 versions before 22.3R3-S3,\n  *  22.4 versions before 22.4R3,\n  *  23.2 versions before 23.2R2.","status":"published","published":"2024-07-11T16:15:04.343Z","modified":"2026-06-17T07:42:08.073Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","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":"secondary"}],"cwes":["CWE-134"],"updated_at":"2026-11-02T14:10:12.994089Z"}]}}