CVE-2022-22180

{"id": "CVE-2022-22180", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}, {"type": "Secondary", "source": "sirt@juniper.net", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2022-01-19T01:15:09.687", "references": [{"url": "https://kb.juniper.net/JSA11286", "tags": ["Vendor Advisory"], "source": "sirt@juniper.net"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "sirt@juniper.net", "description": [{"lang": "en", "value": "CWE-754"}]}], "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."}, {"lang": "es", "value": "Una vulnerabilidad de Comprobaci\u00f3n inapropiada de Condiciones Inusuales o Excepcionales en el procesamiento de paquetes IPv6 espec\u00edficos en determinados dispositivos de la serie EX puede conllevar a un agotamiento de la memoria DMA causando una denegaci\u00f3n de servicio (DoS). Con el tiempo, una explotaci\u00f3n de esta vulnerabilidad puede causar que el tr\u00e1fico deje de ser reenviado, o un bloqueo del proceso fxpc. Una indicaci\u00f3n de que el problema est\u00e1 ocurriendo puede observarse mediante los siguientes mensajes de registro: 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 Cuando El uso de la Pila de Packet DMA alcanza el 99%, el sistema se vuelve inestable. El uso de la pila de Packet DMA puede ser monitoreado usando el comando 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 &lt;&lt;&lt;&lt; 5 903fffe0 20971504 20971504 0 0 Blob. Este problema afecta: Juniper Networks Junos OS versiones 18.4 anteriores a 18.4R2-S10, 18.4R3-S10 en las series EX2300, EX2300-MP, EX3400; 19.1 versiones anteriores a 19.1R3-S7 en las series EX2300, EX2300-MP, EX3400; 19.2 versiones anteriores a 19.2R1-S8, 19.2R3-S4 en las series EX2300, EX2300-MP, EX3400; 19. 3 versiones anteriores a 19.3R3-S5 en las series EX2300, EX2300-MP y EX3400; 19.4 versiones anteriores a 19.4R3-S7 en las series EX2300, EX2300-MP y EX3400; versiones 20.1 anteriores a 20.1R3-S3 en las series EX2300, EX2300-MP y EX3400; 20. 2 versiones anteriores a 20.2R3-S3 en las series EX2300, EX2300-MP y EX3400; versiones 20.3 anteriores a 20.3R3-S2 en las series EX2300, EX2300-MP y EX3400; versiones 20.4 anteriores a 20.4R3-S1 en las series EX2300, EX2300-MP y EX3400; 21. 1 versiones anteriores a 21.1R2-S2, 21.1R3 en las series EX2300, EX2300-MP, EX3400; 21.2 versiones anteriores a 21.2R1-S2, 21.2R2 en las series EX2300, EX2300-MP, EX3400; versiones 21.3 anteriores a 21.3R1-S1, 21.3R2 en las series EX2300, EX2300-MP, EX3400"}], "lastModified": "2022-02-01T20:17:05.010", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:juniper:junos:18.4:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "74CA9010-D3DE-487B-B46F-589A48AB0F0A"}, {"criteria": "cpe:2.3:o:juniper:junos:18.4:r1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A38F224C-8E9B-44F3-9D4F-6C9F04F57927"}, {"criteria": "cpe:2.3:o:juniper:junos:18.4:r1-s1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "853F146A-9A0F-49B6-AFD2-9907434212F1"}, {"criteria": "cpe:2.3:o:juniper:junos:18.4:r1-s2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8F73B88B-E66C-4ACD-B38D-9365FB230ABA"}, {"criteria": "cpe:2.3:o:juniper:junos:18.4:r1-s3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EE1F82EC-3222-4158-8923-59CDA1909A9C"}, {"criteria": "cpe:2.3:o:juniper:junos:18.4:r1-s4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": 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