{"id":"CVE-2023-22395","state":"PUBLISHED","title":"Junos OS: In an MPLS scenario the processing of specific packets to the device causes a buffer leak and ultimately a loss of connectivity","description":"A Missing Release of Memory after Effective Lifetime vulnerability in the kernel of Juniper Networks Junos OS allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS). In an MPLS scenario specific packets destined to an Integrated Routing and Bridging (irb) interface of the device will cause a buffer (mbuf) to leak. Continued receipt of these specific packets will eventually cause a loss of connectivity to and from the device, and requires a reboot to recover. These mbufs can be monitored by using the CLI command 'show system buffers': user@host> show system buffers 783/1497/2280 mbufs in use (current/cache/total) user@host> show system buffers 793/1487/2280 mbufs in use (current/cache/total) <<<<<< mbuf usage increased This issue affects Juniper Networks Junos OS: All versions prior to 19.3R3-S7; 19.4 versions prior to 19.4R3-S9; 20.1 version 20.1R1 and later versions; 20.2 versions prior to 20.2R3-S5; 20.3 versions prior to 20.3R3-S5; 20.4 versions prior to 20.4R3-S4; 21.1 versions prior to 21.1R3-S3; 21.2 versions prior to 21.2R3-S2; 21.3 versions prior to 21.3R3-S1; 21.4 versions prior to 21.4R3; 22.1 versions prior to 22.1R2.","publishedAt":"2023-01-12T00:00:00.000Z","updatedAt":"2025-04-07T15:42:48.152Z","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":"affected","lessThan":"19.3R3-S7","versionType":"custom"},{"version":"19.4","status":"affected","lessThan":"19.4R3-S9","versionType":"custom"},{"version":"20.1R1","status":"affected","lessThan":"20.1*","versionType":"custom"},{"version":"20.2","status":"affected","lessThan":"20.2R3-S5","versionType":"custom"},{"version":"20.3","status":"affected","lessThan":"20.3R3-S5","versionType":"custom"},{"version":"20.4","status":"affected","lessThan":"20.4R3-S4","versionType":"custom"},{"version":"21.1","status":"affected","lessThan":"21.1R3-S3","versionType":"custom"},{"version":"21.2","status":"affected","lessThan":"21.2R3-S2","versionType":"custom"},{"version":"21.3","status":"affected","lessThan":"21.3R3-S1","versionType":"custom"},{"version":"21.4","status":"affected","lessThan":"21.4R3","versionType":"custom"},{"version":"22.1","status":"affected","lessThan":"22.1R2","versionType":"custom"}]}],"references":["https://kb.juniper.net/JSA70191"],"weaknesses":["CWE-401"],"ingestedAt":"2026-10-29T20:05:43.909Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/22xxx/CVE-2023-22395.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-22395","state":"PUBLISHED","datePublished":"2023-01-12T00:00:00.000Z","dateUpdated":"2025-04-07T15:42:48.152Z","assignerShortName":"juniper","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateReserved":"2022-12-27T00:00:00.000Z"},"containers":{"cna":{"title":"Junos OS: In an MPLS scenario the processing of specific packets to the device causes a buffer leak and ultimately a loss of connectivity","descriptions":[{"lang":"en","value":"A Missing Release of Memory after Effective Lifetime vulnerability in the kernel of Juniper Networks Junos OS allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS). In an MPLS scenario specific packets destined to an Integrated Routing and Bridging (irb) interface of the device will cause a buffer (mbuf) to leak. Continued receipt of these specific packets will eventually cause a loss of connectivity to and from the device, and requires a reboot to recover. These mbufs can be monitored by using the CLI command 'show system buffers': user@host> show system buffers 783/1497/2280 mbufs in use (current/cache/total) user@host> show system buffers 793/1487/2280 mbufs in use (current/cache/total) <<<<<< mbuf usage increased This issue affects Juniper Networks Junos OS: All versions prior to 19.3R3-S7; 19.4 versions prior to 19.4R3-S9; 20.1 version 20.1R1 and later versions; 20.2 versions prior to 20.2R3-S5; 20.3 versions prior to 20.3R3-S5; 20.4 versions prior to 20.4R3-S4; 21.1 versions prior to 21.1R3-S3; 21.2 versions prior to 21.2R3-S2; 21.3 versions prior to 21.3R3-S1; 21.4 versions prior to 21.4R3; 22.1 versions prior to 22.1R2."}],"affected":[{"vendor":"Juniper Networks","product":"Junos OS","versions":[{"version":"unspecified","status":"affected","lessThan":"19.3R3-S7","versionType":"custom"},{"version":"19.4","status":"affected","lessThan":"19.4R3-S9","versionType":"custom"},{"version":"20.1R1","status":"affected","lessThan":"20.1*","versionType":"custom"},{"version":"20.2","status":"affected","lessThan":"20.2R3-S5","versionType":"custom"},{"version":"20.3","status":"affected","lessThan":"20.3R3-S5","versionType":"custom"},{"version":"20.4","status":"affected","lessThan":"20.4R3-S4","versionType":"custom"},{"version":"21.1","status":"affected","lessThan":"21.1R3-S3","versionType":"custom"},{"version":"21.2","status":"affected","lessThan":"21.2R3-S2","versionType":"custom"},{"version":"21.3","status":"affected","lessThan":"21.3R3-S1","versionType":"custom"},{"version":"21.4","status":"affected","lessThan":"21.4R3","versionType":"custom"},{"version":"22.1","status":"affected","lessThan":"22.1R2","versionType":"custom"}]}],"references":[{"url":"https://kb.juniper.net/JSA70191"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-401","type":"CWE","lang":"en","description":"CWE-401 Missing Release of Memory after Effective Lifetime"}]},{"descriptions":[{"type":"text","lang":"en","description":"Denial of Service (DoS)"}]}],"providerMetadata":{"shortName":"juniper","orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateUpdated":"2023-01-12T00:00:00.000Z"},"datePublic":"2023-01-11T00:00:00.000Z","x_generator":{"engine":"Vulnogram 0.0.9"},"source":{"advisory":"JSA70191","defect":["1666181"],"discovery":"USER"},"configurations":[{"lang":"en","value":"To be exposed to this vulnerability a minimal IRB configuration like in the following example needs to be present:\n\n  [interfaces irb unit <unit> family inet address <IP-adress>]"}],"workarounds":[{"lang":"en","value":"There are no known workarounds for this issue."}],"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: 19.3R3-S7, 19.4R3-S9, 20.2R3-S5, 20.3R3-S5, 20.4R3-S4, 21.1R3-S3, 21.2R3-S2, 21.3R3-S1, 21.4R3, 22.1R2, 22.2R1, and all subsequent releases."}]},"adp":[{"title":"CVE Program Container","references":[{"url":"https://kb.juniper.net/JSA70191","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T10:07:06.642Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-04-07T15:10:37.940814Z","id":"CVE-2023-22395","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-04-07T15:42:48.152Z"}}]}}}