CVE-2021-0217
Vulnerability from cvelistv5
Published
2021-01-15 17:35
Modified
2024-09-17 02:06
Severity ?
EPSS score ?
Summary
Junos OS: EX Series and QFX Series: Memory leak issue processing specific DHCP packets
References
| ▼ | URL | Tags | |
|---|---|---|---|
| sirt@juniper.net | https://kb.juniper.net/JSA11107 | Exploit, Vendor Advisory |
Impacted products
| ▼ | Vendor | Product |
|---|---|---|
| Juniper Networks | Junos OS |
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Packet DMA heap utilization can be monitored through the following 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 \u003c--- 5 903fffe0 20971504 20971504 0 0 Blob An indication of the issue occurring may be observed through the following log messages: Dec 10 08:07:00.124 2020 hostname fpc0 brcm_pkt_buf_alloc:523 (buf alloc) failed allocating packet buffer Dec 10 08:07:00.126 2020 hostname fpc0 (buf alloc) failed allocating packet buffer Dec 10 08:07:00.128 2020 hostname fpc0 brcm_pkt_buf_alloc:523 (buf alloc) failed allocating packet buffer Dec 10 08:07:00.130 2020 hostnameC fpc0 (buf alloc) failed allocating packet buffer This issue affects Juniper Networks Junos OS on EX Series and QFX Series: 17.4R3 versions prior to 17.4R3-S3; 18.1R3 versions between 18.1R3-S6 and 18.1R3-S11; 18.2R3 versions prior to 18.2R3-S6; 18.3R3 versions prior to 18.3R3-S4; 18.4R2 versions prior to 18.4R2-S5; 18.4R3 versions prior to 18.4R3-S6; 19.1 versions between 19.1R2 and 19.1R3-S3; 19.2 versions prior to 19.2R3-S1; 19.3 versions prior to 19.3R2-S5, 19.3R3; 19.4 versions prior to 19.4R2-S2, 19.4R3; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R1-S2, 20.2R2. Junos OS versions prior to 17.4R3 are unaffected by this vulnerability.\"},{\"lang\":\"es\",\"value\":\"Una vulnerabilidad en el procesamiento de determinados paquetes DHCP de clientes adyacentes en switches de la Serie EX y Serie QFX que ejecutan el Juniper Networks Junos OS con un servidor de local/relay DHCP configurado 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 bloquearse un proceso fxpc. Cuando la utilizaci\u00f3n de la pila de paquetes DMA alcanza el 99%, el sistema se volver\u00e1 inestable. La utilizaci\u00f3n de la pila de paquetes DMA puede ser monitoreada mediante el siguiente 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 (--- 5 903fffe0 20971504 20971504 0 0 Blob. Se puede observar una indicaci\u00f3n del problema mediante los siguientes mensajes de registro: Dec 10 08:07:00.124 2020 hostname fpc0 brcm_pkt_buf_alloc:523 (buf alloc) failed allocating packet buffer Dec 10 08:07:00.126 2020 hostname fpc0 (buf alloc) failed allocating packet buffer Dec 10 08:07:00.128 2020 hostname fpc0 brcm_pkt_buf_alloc:523 (buf alloc) failed allocating packet buffer Dec 10 08:07:00.130 2020 hostnameC fpc0 (buf alloc) failed allocating packet buffer . Este problema afecta a Juniper Networks Junos SO en la Serie EX y Serie QFX: versiones 17.4R3 anteriores a 17.4R3-S3; versiones 18.1R3 entre 18.1R3-S6 y 18.1R3-S11; versiones 18.2R3 anteriores a 18.2R3-S6; versiones 18.3R3 anteriores a 18.3R3-S4; versiones 18.4R2 anteriores a 18.4R2-S5; versiones 18.4R3 anteriores a 18.4R3-S6; versiones 19.1 entre 19.1R2 y 19.1R3-S3; versiones 19.2 versiones anteriores a 19.2R3-S1; versiones 19.3 anteriores a 19.3R2-S5, 19.3R3; versiones 19.4 anteriores a 19.4R2-S2, 19.4R3; versiones 20.1 anteriores a 20.1R2; versiones 20.2 anteriores a 20.2R1-S2, 20.2R2. Las versiones de Junos OS anteriores a 17.4R3 no est\u00e1n afectadas por esta vulnerabilidad\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"sirt@juniper.net\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":7.4,\"baseSeverity\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":4.0}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:A/AC:L/Au:N/C:N/I:N/A:P\",\"accessVector\":\"ADJACENT_NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\",\"baseScore\":3.3},\"baseSeverity\":\"LOW\",\"exploitabilityScore\":6.5,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-770\"}]},{\"source\":\"sirt@juniper.net\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-119\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:17.4:r3:*:*:*:*:*:*\",\"matchCriteriaId\":\"8732E25A-9073-4C7B-9E89-C02368728EB4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:17.4:r3-s1:*:*:*:*:*:*\",\"matchCriteriaId\":\"09255363-BF79-4FC3-AADD-5FAD0902174F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:17.4:r3-s2:*:*:*:*:*:*\",\"matchCriteriaId\":\"11A24AA6-5378-4EEA-82D5-66A5F1110698\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:18.1:r3-s10:*:*:*:*:*:*\",\"matchCriteriaId\":\"68EBE6E9-5E3B-44A1-992F-D6B656706268\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:18.1:r3-s7:*:*:*:*:*:*\",\"matchCriteriaId\":\"330D176F-8DAD-440C-A623-44FA233FAB01\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:18.1:r3-s8:*:*:*:*:*:*\",\"matchCriteriaId\":\"8CC5EAB8-1364-4325-9F01-BE7CC479C29D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:18.1:r3-s9:*:*:*:*:*:*\",\"matchCriteriaId\":\"4E2E933A-852F-4257-860D-09638EE0D2F3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:18.2:r3:*:*:*:*:*:*\",\"matchCriteriaId\":\"B670F988-78F2-4BC6-B7FC-E34C280F67DC\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:18.2:r3-s1:*:*:*:*:*:*\",\"matchCriteriaId\":\"2F9451C7-6466-4AC9-9A7F-90A2817AED6C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:18.2:r3-s2:*:*:*:*:*:*\",\"matchCriteriaId\":\"871CA952-C5EC-4A25-8EF0-C2EC484F7DE9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:18.2:r3-s3:*:*:*:*:*:*\",\"matchCriteriaId\":\"80E2AD65-3DAC-4618-AB73-C43EDCDC7A13\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:18.2:r3-s4:*:*:*:*:*:*\",\"matchCriteriaId\":\"B783A510-A694-4BF0-8995-F05507F75A90\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:18.2:r3-s5:*:*:*:*:*:*\",\"matchCriteriaId\":\"C9CAAF7C-9876-473A-BE83-16EA8F00E8C0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:18.3:r3:*:*:*:*:*:*\",\"matchCriteriaId\":\"CFB29C9B-9729-43EB-AF98-AF44038DA711\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:18.3:r3-s1:*:*:*:*:*:*\",\"matchCriteriaId\":\"2D1FB957-54C8-428E-BC8D-2802D7F6895F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:18.3:r3-s2:*:*:*:*:*:*\",\"matchCriteriaId\":\"A0BC4766-4BA4-4B02-A654-5C527EA66E9E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:18.3:r3-s3:*:*:*:*:*:*\",\"matchCriteriaId\":\"BB8263A9-5D63-46A2-9C98-B3980910B612\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:18.4:r2:*:*:*:*:*:*\",\"matchCriteriaId\":\"D59D7A31-128B-4034-862B-8EF3CE3EE949\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:18.4:r2-s1:*:*:*:*:*:*\",\"matchCriteriaId\":\"0C5E097B-B79E-4E6A-9291-C8CB9674FED5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:18.4:r2-s2:*:*:*:*:*:*\",\"matchCriteriaId\":\"819FA3ED-F934-4B20-BC0E-D638ACCB7787\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:18.4:r2-s3:*:*:*:*:*:*\",\"matchCriteriaId\":\"3D7D773A-4988-4D7C-A105-1885EBE14426\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:18.4:r2-s4:*:*:*:*:*:*\",\"matchCriteriaId\":\"1BD93674-9375-493E-BD6C-8AD41CC75DD4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.1:r2-s1:*:*:*:*:*:*\",\"matchCriteriaId\":\"C8CF858F-84BB-4AEA-B829-FCF22C326160\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.1:r3:*:*:*:*:*:*\",\"matchCriteriaId\":\"5405F361-AB96-4477-AA0D-49B874324B39\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.1:r3-s1:*:*:*:*:*:*\",\"matchCriteriaId\":\"E45E5421-2F6F-4AF9-8EB1-431A804FC649\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.1:r3-s2:*:*:*:*:*:*\",\"matchCriteriaId\":\"93098975-4A06-4A72-8DF0-F2C5E1AF2F77\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.2:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"0E7545CE-6300-4E81-B5AF-2BE150C1B190\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.2:r1:*:*:*:*:*:*\",\"matchCriteriaId\":\"4CA3060F-1800-4A06-A453-FB8CE4B65312\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.2:r1-s1:*:*:*:*:*:*\",\"matchCriteriaId\":\"9A5B337A-727C-4767-AD7B-E0F7F99EB46F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.2:r1-s2:*:*:*:*:*:*\",\"matchCriteriaId\":\"16FDE60B-7A99-4683-BC14-530B5B005F8B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.2:r1-s3:*:*:*:*:*:*\",\"matchCriteriaId\":\"725D8C27-E4F8-4394-B4EC-B49B6D3C2709\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.2:r1-s4:*:*:*:*:*:*\",\"matchCriteriaId\":\"8233C3AB-470E-4D13-9BFD-C9E90918FD0B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.2:r2:*:*:*:*:*:*\",\"matchCriteriaId\":\"7C71D2FA-B1A4-4004-807F-7B3BB347DF4C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.2:r3:*:*:*:*:*:*\",\"matchCriteriaId\":\"512FB3D1-BA5B-4F73-BDB2-49D6889F5473\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.3:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"59006503-B2CA-4F79-AC13-7C5615A74CE5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.3:r1:*:*:*:*:*:*\",\"matchCriteriaId\":\"B8110DA9-54B1-43CF-AACB-76EABE0C9EF6\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.3:r1-s1:*:*:*:*:*:*\",\"matchCriteriaId\":\"11B5CC5A-1959-4113-BFCF-E4BA63D918C1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.3:r2:*:*:*:*:*:*\",\"matchCriteriaId\":\"33F08A33-EF80-4D86-9A9A-9DF147B9B6D3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.3:r2-s1:*:*:*:*:*:*\",\"matchCriteriaId\":\"AF24ACBD-5F84-47B2-BFF3-E9A56666269C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.3:r2-s2:*:*:*:*:*:*\",\"matchCriteriaId\":\"3935A586-41BD-4FA5-9596-DED6F0864777\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.3:r2-s3:*:*:*:*:*:*\",\"matchCriteriaId\":\"B83FB539-BD7C-4BEE-9022-098F73902F38\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.3:r2-s4:*:*:*:*:*:*\",\"matchCriteriaId\":\"7659AC36-A5EA-468A-9793-C1EC914D36F4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.4:r1:*:*:*:*:*:*\",\"matchCriteriaId\":\"DC743EE4-8833-452A-94DB-655BF139F883\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.4:r1-s1:*:*:*:*:*:*\",\"matchCriteriaId\":\"FE96A8EA-FFE3-4D8F-9266-21899149D634\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.4:r1-s2:*:*:*:*:*:*\",\"matchCriteriaId\":\"C12A75C6-2D00-4202-B861-00FF71585FA0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.4:r2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4DCFA774-96EF-4018-82CF-95C807025C24\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:19.4:r2-s1:*:*:*:*:*:*\",\"matchCriteriaId\":\"76022948-4B07-43CB-824C-44E1AB3537CB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:20.1:r1:*:*:*:*:*:*\",\"matchCriteriaId\":\"8328FDE6-9707-4142-B905-3B07C0E28E35\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:20.1:r1-s1:*:*:*:*:*:*\",\"matchCriteriaId\":\"41CD982F-E6F2-4951-9F96-A76C142DF08E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:20.1:r1-s2:*:*:*:*:*:*\",\"matchCriteriaId\":\"19FDC05F-5582-4F7E-B628-E58A3C0E7F2F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:20.1:r1-s3:*:*:*:*:*:*\",\"matchCriteriaId\":\"401306D1-E9CE-49C6-8DC9-0E8747B9DC2C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:20.2:r1:*:*:*:*:*:*\",\"matchCriteriaId\":\"CD07B7E2-F5C2-4610-9133-FDA9E66DFF4F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:juniper:junos:20.2:r1-s1:*:*:*:*:*:*\",\"matchCriteriaId\":\"D3C23AEB-34DE-44FB-8D64-E69D6E8B7401\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:juniper:ex2300:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"3B3302CB-457F-4BD2-B80B-F70FB4C4542E\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:juniper:ex2300-c:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"979C3597-C53B-4F4B-9EA7-126DA036C86D\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:juniper:ex2300m:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"62A536DA-5A57-4255-AB22-F99F8B7FF62A\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:juniper:ex3400:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"47DAF5E7-E610-4D74-8573-41C16D642837\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:juniper:ex4300:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E594D6DC-87F6-40D2-8268-ED6021462168\"},{\"vulnerable\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Advisory\"]}]}}"
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.