{"id":"CVE-2022-22180","state":"PUBLISHED","title":"Junos OS: EX2300 Series, EX2300-MP Series, EX3400 Series: A slow memory leak due to processing of specific IPv6 packets","description":"An Improper Check for Unusual or Exceptional Conditions vulnerability in the processing of specific IPv6 packets on certain EX Series devices may lead to exhaustion of DMA memory causing a Denial of Service (DoS). Over time, exploitation of this vulnerability may cause traffic to stop being forwarded, or a crash of the fxpc process. An indication of the issue occurring may be observed through the following log messages: Sep 13 17:14:59 hostname : %PFE-3: fpc0 (buf alloc) failed allocating packet buffer Sep 13 17:14:59 hostname : %PFE-7: fpc0 brcm_pkt_buf_alloc:393 (buf alloc) failed allocating packet buffer When Packet DMA heap utilization reaches 99%, the system will become unstable. Packet DMA heap utilization can be monitored using the command: user@junos# request pfe execute target fpc0 timeout 30 command \"show heap\" ID Base Total(b) Free(b) Used(b) % Name -- ---------- ----------- ----------- ----------- --- ----------- 0 213301a8 536870488 387228840 149641648 27 Kernel 1 91800000 8388608 3735120 4653488 55 DMA 2 92000000 75497472 74452192 1045280 1 PKT DMA DESC 3 d330000 335544320 257091400 78452920 23 Bcm_sdk 4 96800000 184549376 2408 184546968 99 Packet DMA <<<< 5 903fffe0 20971504 20971504 0 0 Blob This issue affects: Juniper Networks Junos OS 18.4 versions prior to 18.4R2-S10, 18.4R3-S10 on EX2300 Series, EX2300-MP Series, EX3400 Series; 19.1 versions prior to 19.1R3-S7 on EX2300 Series, EX2300-MP Series, EX3400 Series; 19.2 versions prior to 19.2R1-S8, 19.2R3-S4 on EX2300 Series, EX2300-MP Series, EX3400 Series; 19.3 versions prior to 19.3R3-S5 on EX2300 Series, EX2300-MP Series, EX3400 Series; 19.4 versions prior to 19.4R3-S7 on EX2300 Series, EX2300-MP Series, EX3400 Series; 20.1 versions prior to 20.1R3-S3 on EX2300 Series, EX2300-MP Series, EX3400 Series; 20.2 versions prior to 20.2R3-S3 on EX2300 Series, EX2300-MP Series, EX3400 Series; 20.3 versions prior to 20.3R3-S2 on EX2300 Series, EX2300-MP Series, EX3400 Series; 20.4 versions prior to 20.4R3-S1 on EX2300 Series, EX2300-MP Series, EX3400 Series; 21.1 versions prior to 21.1R2-S2, 21.1R3 on EX2300 Series, EX2300-MP Series, EX3400 Series; 21.2 versions prior to 21.2R1-S2, 21.2R2 on EX2300 Series, EX2300-MP Series, EX3400 Series; 21.3 versions prior to 21.3R1-S1, 21.3R2 on EX2300 Series, EX2300-MP Series, EX3400 Series.","publishedAt":"2022-01-19T00:21:31.093Z","updatedAt":"2024-09-17T02:42:37.964Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/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":"18.4","status":"affected","lessThan":"18.4R2-S10, 18.4R3-S10","versionType":"custom"},{"version":"19.1","status":"affected","lessThan":"19.1R3-S7","versionType":"custom"},{"version":"19.2","status":"affected","lessThan":"19.2R1-S8, 19.2R3-S4","versionType":"custom"},{"version":"19.3","status":"affected","lessThan":"19.3R3-S5","versionType":"custom"},{"version":"19.4","status":"affected","lessThan":"19.4R3-S7","versionType":"custom"},{"version":"20.1","status":"affected","lessThan":"20.1R3-S3","versionType":"custom"},{"version":"20.2","status":"affected","lessThan":"20.2R3-S3","versionType":"custom"},{"version":"20.3","status":"affected","lessThan":"20.3R3-S2","versionType":"custom"},{"version":"20.4","status":"affected","lessThan":"20.4R3-S1","versionType":"custom"},{"version":"21.1","status":"affected","lessThan":"21.1R2-S2, 21.1R3","versionType":"custom"},{"version":"21.2","status":"affected","lessThan":"21.2R1-S2, 21.2R2","versionType":"custom"},{"version":"21.3","status":"affected","lessThan":"21.3R1-S1, 21.3R2","versionType":"custom"}],"platforms":["EX2300 Series, EX2300-MP Series, EX3400 Series"]},{"vendor":"Juniper Networks","product":"Junos OS","versions":[{"version":"unspecified","status":"unaffected","lessThan":"18.4R2-S10, 18.4R3-S10","versionType":"custom"}]}],"references":["https://kb.juniper.net/JSA11286"],"weaknesses":["CWE-754"],"ingestedAt":"2026-10-29T19:49:38.433Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/22xxx/CVE-2022-22180.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2022-22180","state":"PUBLISHED","datePublished":"2022-01-19T00:21:31.093Z","dateUpdated":"2024-09-17T02:42:37.964Z","assignerShortName":"juniper","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateReserved":"2021-12-21T00:00:00.000Z"},"containers":{"cna":{"title":"Junos OS: EX2300 Series, EX2300-MP Series, EX3400 Series: A slow memory leak due to processing of specific IPv6 packets","descriptions":[{"lang":"en","value":"An Improper Check for Unusual or Exceptional Conditions vulnerability in the processing of specific IPv6 packets on certain EX Series devices may lead to exhaustion of DMA memory causing a Denial of Service (DoS). Over time, exploitation of this vulnerability may cause traffic to stop being forwarded, or a crash of the fxpc process. An indication of the issue occurring may be observed through the following log messages: Sep 13 17:14:59 hostname : %PFE-3: fpc0 (buf alloc) failed allocating packet buffer Sep 13 17:14:59 hostname : %PFE-7: fpc0 brcm_pkt_buf_alloc:393 (buf alloc) failed allocating packet buffer When Packet DMA heap utilization reaches 99%, the system will become unstable. Packet DMA heap utilization can be monitored using the command: user@junos# request pfe execute target fpc0 timeout 30 command \"show heap\" ID Base Total(b) Free(b) Used(b) % Name -- ---------- ----------- ----------- ----------- --- ----------- 0 213301a8 536870488 387228840 149641648 27 Kernel 1 91800000 8388608 3735120 4653488 55 DMA 2 92000000 75497472 74452192 1045280 1 PKT DMA DESC 3 d330000 335544320 257091400 78452920 23 Bcm_sdk 4 96800000 184549376 2408 184546968 99 Packet DMA <<<< 5 903fffe0 20971504 20971504 0 0 Blob This issue affects: Juniper Networks Junos OS 18.4 versions prior to 18.4R2-S10, 18.4R3-S10 on EX2300 Series, EX2300-MP Series, EX3400 Series; 19.1 versions prior to 19.1R3-S7 on EX2300 Series, EX2300-MP Series, EX3400 Series; 19.2 versions prior to 19.2R1-S8, 19.2R3-S4 on EX2300 Series, EX2300-MP Series, EX3400 Series; 19.3 versions prior to 19.3R3-S5 on EX2300 Series, EX2300-MP Series, EX3400 Series; 19.4 versions prior to 19.4R3-S7 on EX2300 Series, EX2300-MP Series, EX3400 Series; 20.1 versions prior to 20.1R3-S3 on EX2300 Series, EX2300-MP Series, EX3400 Series; 20.2 versions prior to 20.2R3-S3 on EX2300 Series, EX2300-MP Series, EX3400 Series; 20.3 versions prior to 20.3R3-S2 on EX2300 Series, EX2300-MP Series, EX3400 Series; 20.4 versions prior to 20.4R3-S1 on EX2300 Series, EX2300-MP Series, EX3400 Series; 21.1 versions prior to 21.1R2-S2, 21.1R3 on EX2300 Series, EX2300-MP Series, EX3400 Series; 21.2 versions prior to 21.2R1-S2, 21.2R2 on EX2300 Series, EX2300-MP Series, EX3400 Series; 21.3 versions prior to 21.3R1-S1, 21.3R2 on EX2300 Series, EX2300-MP Series, EX3400 Series."}],"affected":[{"vendor":"Juniper Networks","product":"Junos OS","versions":[{"version":"18.4","status":"affected","lessThan":"18.4R2-S10, 18.4R3-S10","versionType":"custom"},{"version":"19.1","status":"affected","lessThan":"19.1R3-S7","versionType":"custom"},{"version":"19.2","status":"affected","lessThan":"19.2R1-S8, 19.2R3-S4","versionType":"custom"},{"version":"19.3","status":"affected","lessThan":"19.3R3-S5","versionType":"custom"},{"version":"19.4","status":"affected","lessThan":"19.4R3-S7","versionType":"custom"},{"version":"20.1","status":"affected","lessThan":"20.1R3-S3","versionType":"custom"},{"version":"20.2","status":"affected","lessThan":"20.2R3-S3","versionType":"custom"},{"version":"20.3","status":"affected","lessThan":"20.3R3-S2","versionType":"custom"},{"version":"20.4","status":"affected","lessThan":"20.4R3-S1","versionType":"custom"},{"version":"21.1","status":"affected","lessThan":"21.1R2-S2, 21.1R3","versionType":"custom"},{"version":"21.2","status":"affected","lessThan":"21.2R1-S2, 21.2R2","versionType":"custom"},{"version":"21.3","status":"affected","lessThan":"21.3R1-S1, 21.3R2","versionType":"custom"}],"platforms":["EX2300 Series, EX2300-MP Series, EX3400 Series"]},{"vendor":"Juniper Networks","product":"Junos OS","versions":[{"version":"unspecified","status":"unaffected","lessThan":"18.4R2-S10, 18.4R3-S10","versionType":"custom"}]}],"references":[{"url":"https://kb.juniper.net/JSA11286","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-754","description":"CWE-754 Improper Check for Unusual or Exceptional Conditions","lang":"en","type":"CWE"}]},{"descriptions":[{"description":"Denial of Service (DoS)","lang":"en","type":"text"}]}],"providerMetadata":{"shortName":"juniper","dateUpdated":"2022-01-19T00:21:31.000Z","orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968"},"datePublic":"2022-01-12T00:00:00.000Z","exploits":[{"lang":"en","value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}],"solutions":[{"lang":"en","value":"The following software releases have been updated to resolve this specific issue: 18.4R2-S10, 18.4R3-S10, 19.1R3-S7, 19.2R1-S8, 19.2R3-S4, 19.4R3-S7, 20.1R3-S3, 20.2R3-S3, 20.3R3-S2, 20.4R3-S1, 21.1R2-S2, 21.1R3, 21.2R1-S2, 21.2R2, 21.2R3, 21.3R1-S1, 21.3R2, 21.4R1, and all subsequent releases."}],"source":{"advisory":"JSA11286","defect":["1619970"],"discovery":"USER"},"workarounds":[{"lang":"en","value":"If IPv6 is not used in the environment, to prevent the issue an administrator can apply a firewall filter for blocking IPv6 packets on the ingress port where the traffic might be received:\n  [firewall family ethernet-switching filter BLOCK-IPv6 interface-specific]\n  [firewall family ethernet-switching filter BLOCK-IPv6 term 1 from ether-type ipv6]\n  [firewall family ethernet-switching filter BLOCK-IPv6 term 1 then discard]\n  [firewall family ethernet-switching filter BLOCK-IPv6 term 1 then count BLOCK-IPv6_COUNT]\n  [firewall family ethernet-switching filter BLOCK-IPv6 term default then accept]\n  [interfaces <interface ID> family ethernet-switching filter input BLOCK-IPv6]"}],"x_generator":{"engine":"Vulnogram 0.0.9"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"sirt@juniper.net","DATE_PUBLIC":"2022-01-12T17:00:00.000Z","ID":"CVE-2022-22180","STATE":"PUBLIC","TITLE":"Junos OS: EX2300 Series, EX2300-MP Series, EX3400 Series: A slow memory leak due to processing of specific IPv6 packets"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Junos OS","version":{"version_data":[{"platform":"EX2300 Series, EX2300-MP Series, EX3400 Series","version_affected":"<","version_name":"18.4","version_value":"18.4R2-S10, 18.4R3-S10"},{"platform":"EX2300 Series, EX2300-MP Series, EX3400 Series","version_affected":"<","version_name":"19.1","version_value":"19.1R3-S7"},{"platform":"EX2300 Series, EX2300-MP Series, EX3400 Series","version_affected":"<","version_name":"19.2","version_value":"19.2R1-S8, 19.2R3-S4"},{"platform":"EX2300 Series, EX2300-MP Series, EX3400 Series","version_affected":"<","version_name":"19.3","version_value":"19.3R3-S5"},{"platform":"EX2300 Series, EX2300-MP Series, EX3400 Series","version_affected":"<","version_name":"19.4","version_value":"19.4R3-S7"},{"platform":"EX2300 Series, EX2300-MP Series, EX3400 Series","version_affected":"<","version_name":"20.1","version_value":"20.1R3-S3"},{"platform":"EX2300 Series, EX2300-MP Series, EX3400 Series","version_affected":"<","version_name":"20.2","version_value":"20.2R3-S3"},{"platform":"EX2300 Series, EX2300-MP Series, EX3400 Series","version_affected":"<","version_name":"20.3","version_value":"20.3R3-S2"},{"platform":"EX2300 Series, EX2300-MP Series, EX3400 Series","version_affected":"<","version_name":"20.4","version_value":"20.4R3-S1"},{"platform":"EX2300 Series, EX2300-MP Series, EX3400 Series","version_affected":"<","version_name":"21.1","version_value":"21.1R2-S2, 21.1R3"},{"platform":"EX2300 Series, EX2300-MP Series, EX3400 Series","version_affected":"<","version_name":"21.2","version_value":"21.2R1-S2, 21.2R2"},{"platform":"EX2300 Series, EX2300-MP Series, EX3400 Series","version_affected":"<","version_name":"21.3","version_value":"21.3R1-S1, 21.3R2"},{"version_affected":"!<","version_value":"18.4R2-S10, 18.4R3-S10"}]}}]},"vendor_name":"Juniper Networks"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"An Improper Check for Unusual or Exceptional Conditions vulnerability in the processing of specific IPv6 packets on certain EX Series devices may lead to exhaustion of DMA memory causing a Denial of Service (DoS). Over time, exploitation of this vulnerability may cause traffic to stop being forwarded, or a crash of the fxpc process. An indication of the issue occurring may be observed through the following log messages: Sep 13 17:14:59 hostname : %PFE-3: fpc0 (buf alloc) failed allocating packet buffer Sep 13 17:14:59 hostname : %PFE-7: fpc0 brcm_pkt_buf_alloc:393 (buf alloc) failed allocating packet buffer When Packet DMA heap utilization reaches 99%, the system will become unstable. Packet DMA heap utilization can be monitored using the command: user@junos# request pfe execute target fpc0 timeout 30 command \"show heap\" ID Base Total(b) Free(b) Used(b) % Name -- ---------- ----------- ----------- ----------- --- ----------- 0 213301a8 536870488 387228840 149641648 27 Kernel 1 91800000 8388608 3735120 4653488 55 DMA 2 92000000 75497472 74452192 1045280 1 PKT DMA DESC 3 d330000 335544320 257091400 78452920 23 Bcm_sdk 4 96800000 184549376 2408 184546968 99 Packet DMA <<<< 5 903fffe0 20971504 20971504 0 0 Blob This issue affects: Juniper Networks Junos OS 18.4 versions prior to 18.4R2-S10, 18.4R3-S10 on EX2300 Series, EX2300-MP Series, EX3400 Series; 19.1 versions prior to 19.1R3-S7 on EX2300 Series, EX2300-MP Series, EX3400 Series; 19.2 versions prior to 19.2R1-S8, 19.2R3-S4 on EX2300 Series, EX2300-MP Series, EX3400 Series; 19.3 versions prior to 19.3R3-S5 on EX2300 Series, EX2300-MP Series, EX3400 Series; 19.4 versions prior to 19.4R3-S7 on EX2300 Series, EX2300-MP Series, EX3400 Series; 20.1 versions prior to 20.1R3-S3 on EX2300 Series, EX2300-MP Series, EX3400 Series; 20.2 versions prior to 20.2R3-S3 on EX2300 Series, EX2300-MP Series, EX3400 Series; 20.3 versions prior to 20.3R3-S2 on EX2300 Series, EX2300-MP Series, EX3400 Series; 20.4 versions prior to 20.4R3-S1 on EX2300 Series, EX2300-MP Series, EX3400 Series; 21.1 versions prior to 21.1R2-S2, 21.1R3 on EX2300 Series, EX2300-MP Series, EX3400 Series; 21.2 versions prior to 21.2R1-S2, 21.2R2 on EX2300 Series, EX2300-MP Series, EX3400 Series; 21.3 versions prior to 21.3R1-S1, 21.3R2 on EX2300 Series, EX2300-MP Series, EX3400 Series."}]},"exploit":[{"lang":"en","value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}],"generator":{"engine":"Vulnogram 0.0.9"},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-754 Improper Check for Unusual or Exceptional Conditions"}]},{"description":[{"lang":"eng","value":"Denial of Service (DoS)"}]}]},"references":{"reference_data":[{"name":"https://kb.juniper.net/JSA11286","refsource":"CONFIRM","url":"https://kb.juniper.net/JSA11286"}]},"solution":[{"lang":"en","value":"The following software releases have been updated to resolve this specific issue: 18.4R2-S10, 18.4R3-S10, 19.1R3-S7, 19.2R1-S8, 19.2R3-S4, 19.4R3-S7, 20.1R3-S3, 20.2R3-S3, 20.3R3-S2, 20.4R3-S1, 21.1R2-S2, 21.1R3, 21.2R1-S2, 21.2R2, 21.2R3, 21.3R1-S1, 21.3R2, 21.4R1, and all subsequent releases."}],"source":{"advisory":"JSA11286","defect":["1619970"],"discovery":"USER"},"work_around":[{"lang":"en","value":"If IPv6 is not used in the environment, to prevent the issue an administrator can apply a firewall filter for blocking IPv6 packets on the ingress port where the traffic might be received:\n  [firewall family ethernet-switching filter BLOCK-IPv6 interface-specific]\n  [firewall family ethernet-switching filter BLOCK-IPv6 term 1 from ether-type ipv6]\n  [firewall family ethernet-switching filter BLOCK-IPv6 term 1 then discard]\n  [firewall family ethernet-switching filter BLOCK-IPv6 term 1 then count BLOCK-IPv6_COUNT]\n  [firewall family ethernet-switching filter BLOCK-IPv6 term default then accept]\n  [interfaces <interface ID> family ethernet-switching filter input BLOCK-IPv6]"}]}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://kb.juniper.net/JSA11286","tags":["x_refsource_CONFIRM","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-03T03:07:50.054Z"}}]}}}