{"id":"CVE-2020-1651","state":"PUBLISHED","title":"Junos OS: MX Series: PFE on the line card may crash due to memory leak.","description":"On Juniper Networks MX series, receipt of a stream of specific Layer 2 frames may cause a memory leak resulting in the packet forwarding engine (PFE) on the line card to crash and restart, causing traffic interruption. By continuously sending this stream of specific layer 2 frame, an attacker connected to the same broadcast domain can repeatedly crash the PFE, causing a prolonged Denial of Service (DoS). This issue affects Juniper Networks Junos OS on MX Series: 17.2 versions prior to 17.2R3-S4; 17.2X75 versions prior to 17.2X75-D105.19; 17.3 versions prior to 17.3R3-S7; 17.4 versions prior to 17.4R1-S3, 17.4R2; 18.1 versions prior to 18.1R2. This issue does not affect Juniper Networks Junos OS releases prior to 17.2R1.","publishedAt":"2020-07-17T18:40:43.651Z","updatedAt":"2024-09-17T01:10:30.724Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"juniper"},"assigner":"juniper","products":["Juniper Networks Junos OS"],"affected":[{"vendor":"Juniper Networks","product":"Junos OS","versions":[{"version":"unspecified","status":"unaffected","lessThan":"17.2R1","versionType":"custom"},{"version":"17.2","status":"affected","lessThan":"17.2R3-S4","versionType":"custom"},{"version":"17.2X75","status":"affected","lessThan":"17.2X75-D105.19","versionType":"custom"},{"version":"17.3","status":"affected","lessThan":"17.3R3-S7","versionType":"custom"},{"version":"17.4","status":"affected","lessThan":"17.4R1-S3, 17.4R2","versionType":"custom"},{"version":"18.1","status":"affected","lessThan":"18.1R2","versionType":"custom"}],"platforms":["MX Series"]}],"references":["https://kb.juniper.net/JSA11038"],"weaknesses":["CWE-19"],"ingestedAt":"2026-10-29T19:46:49.649Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2020/1xxx/CVE-2020-1651.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2020-1651","state":"PUBLISHED","datePublished":"2020-07-17T18:40:43.651Z","dateUpdated":"2024-09-17T01:10:30.724Z","assignerShortName":"juniper","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateReserved":"2019-11-04T00:00:00.000Z"},"containers":{"cna":{"title":"Junos OS: MX Series: PFE on the line card may crash due to memory leak.","descriptions":[{"lang":"en","value":"On Juniper Networks MX series, receipt of a stream of specific Layer 2 frames may cause a memory leak resulting in the packet forwarding engine (PFE) on the line card to crash and restart, causing traffic interruption. By continuously sending this stream of specific layer 2 frame, an attacker connected to the same broadcast domain can repeatedly crash the PFE, causing a prolonged Denial of Service (DoS). This issue affects Juniper Networks Junos OS on MX Series: 17.2 versions prior to 17.2R3-S4; 17.2X75 versions prior to 17.2X75-D105.19; 17.3 versions prior to 17.3R3-S7; 17.4 versions prior to 17.4R1-S3, 17.4R2; 18.1 versions prior to 18.1R2. 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