{"id":"CVE-2024-39557","state":"PUBLISHED","title":"Junos OS Evolved: MAC table changes cause a memory leak","description":"An Uncontrolled Resource Consumption vulnerability in the \n\nLayer 2 Address Learning Daemon (l2ald)\n\n of Juniper Networks Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a memory leak, eventually exhausting all system memory, leading to a system crash and Denial of Service (DoS).\n\nCertain MAC table updates cause a small amount of memory to leak.  Once memory utilization reaches its limit, the issue will result in a system crash and restart.\n\nTo identify the issue, execute the CLI command:\n \nuser@device> show platform application-info allocations app l2ald-agent\nEVL Object Allocation Statistics:\n \n Node    Application       Context   Name                                 Live     Allocs     Fails       Guids\n re0     l2ald-agent                 net::juniper::rtnh::L2Rtinfo         1069096  1069302    0           1069302\n re0     l2ald-agent                 net::juniper::rtnh::NHOpaqueTlv       114      195        0           195\n\n\n\nThis issue affects Junos OS Evolved: \n\n\n  *  All versions before 21.4R3-S8-EVO,\n\n  *  from 22.2-EVO before 22.2R3-S4-EVO, \n  *  from 22.3-EVO before 22.3R3-S3-EVO, \n  *  from 22.4-EVO before 22.4R3-EVO, \n  *  from 23.2-EVO before 23.2R2-EVO.","publishedAt":"2024-07-10T22:39:48.575Z","updatedAt":"2024-08-02T04:26:15.916Z","severity":{"score":7.1,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/R:A","source":"juniper"},"assigner":"juniper","products":["Juniper Networks Junos OS Evolved"],"affected":[{"vendor":"Juniper Networks","product":"Junos OS Evolved","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"21.4R3-S8-EVO","versionType":"semver"},{"version":"22.2-EVO","status":"affected","lessThan":"22.2R3-S4-EVO","versionType":"semver"},{"version":"22.3-EVO","status":"affected","lessThan":"22.3R3-S3-EVO","versionType":"semver"},{"version":"22.4-EVO","status":"affected","lessThan":"22.4R3-EVO","versionType":"semver"},{"version":"23.2-EVO","status":"affected","lessThan":"23.2R2-EVO","versionType":"semver"}]}],"references":["https://supportportal.juniper.net/JSA83017"],"weaknesses":["CWE-400"],"ingestedAt":"2026-10-29T20:07:39.287Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/39xxx/CVE-2024-39557.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-39557","state":"PUBLISHED","datePublished":"2024-07-10T22:39:48.575Z","dateUpdated":"2024-08-02T04:26:15.916Z","assignerShortName":"juniper","assignerOrgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateReserved":"2024-06-25T15:12:53.247Z"},"containers":{"cna":{"title":"Junos OS Evolved: MAC table changes cause a memory leak","descriptions":[{"lang":"en","value":"An Uncontrolled Resource Consumption vulnerability in the \n\nLayer 2 Address Learning Daemon (l2ald)\n\n of Juniper Networks Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a memory leak, eventually exhausting all system memory, leading to a system crash and Denial of Service (DoS).\n\nCertain MAC table updates cause a small amount of memory to leak.  Once memory utilization reaches its limit, the issue will result in a system crash and restart.\n\nTo identify the issue, execute the CLI command:\n \nuser@device> show platform application-info allocations app l2ald-agent\nEVL Object Allocation Statistics:\n \n Node    Application       Context   Name                                 Live     Allocs     Fails       Guids\n re0     l2ald-agent                 net::juniper::rtnh::L2Rtinfo         1069096  1069302    0           1069302\n re0     l2ald-agent                 net::juniper::rtnh::NHOpaqueTlv       114      195        0           195\n\n\n\nThis issue affects Junos OS Evolved: \n\n\n  *  All versions before 21.4R3-S8-EVO,\n\n  *  from 22.2-EVO before 22.2R3-S4-EVO, \n  *  from 22.3-EVO before 22.3R3-S3-EVO, \n  *  from 22.4-EVO before 22.4R3-EVO, \n  *  from 23.2-EVO before 23.2R2-EVO."}],"affected":[{"vendor":"Juniper Networks","product":"Junos OS Evolved","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"21.4R3-S8-EVO","versionType":"semver"},{"version":"22.2-EVO","status":"affected","lessThan":"22.2R3-S4-EVO","versionType":"semver"},{"version":"22.3-EVO","status":"affected","lessThan":"22.3R3-S3-EVO","versionType":"semver"},{"version":"22.4-EVO","status":"affected","lessThan":"22.4R3-EVO","versionType":"semver"},{"version":"23.2-EVO","status":"affected","lessThan":"23.2R2-EVO","versionType":"semver"}]}],"references":[{"url":"https://supportportal.juniper.net/JSA83017","tags":["vendor-advisory"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]},{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"AUTOMATIC","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"ADJACENT","baseScore":7.1,"baseSeverity":"HIGH","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/R:A","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","description":"CWE-400 Uncontrolled Resource Consumption","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"juniper","orgId":"8cbe9d5a-a066-4c94-8978-4b15efeae968","dateUpdated":"2024-07-10T22:39:48.575Z"},"datePublic":"2024-07-10T16:00:00.000Z","exploits":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}],"value":"Juniper SIRT is not aware of any malicious exploitation of this vulnerability."}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"The following software releases have been updated to resolve this specific issue: 21.4R3-S8-EVO, 22.2R3-S4-EVO, 22.3R3-S3-EVO, 22.4R3-EVO, 23.2R2-EVO, 23.4R1-EVO, and all subsequent releases."}],"value":"The following software releases have been updated to resolve this specific issue: 21.4R3-S8-EVO, 22.2R3-S4-EVO, 22.3R3-S3-EVO, 22.4R3-EVO, 23.2R2-EVO, 23.4R1-EVO, and all subsequent releases."}],"source":{"advisory":"JSA83017","defect":["1756208"],"discovery":"USER"},"workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"There are no known workarounds for this issue."}],"value":"There are no known workarounds for this issue."}],"x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-07-12T20:01:39.694455Z","id":"CVE-2024-39557","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":"2024-07-12T20:01:48.481Z"}},{"title":"CVE Program 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