CVE-2021-0270

Published Apr 22, 2021

Last updated 4 years ago

CVSS medium 5.9

Overview

Description: On PTX Series and QFX10k Series devices with the "inline-jflow" feature enabled, a use after free weakness in the Packet Forwarding Engine (PFE) microkernel architecture of Juniper Networks Junos OS may allow an attacker to cause a Denial of Service (DoS) condition whereby one or more Flexible PIC Concentrators (FPCs) may restart. As this is a race condition situation this issue become more likely to be hit when network instability occurs, such as but not limited to BGP/IGP reconvergences, and/or further likely to occur when more active "traffic flows" are occurring through the device. When this issue occurs, it will cause one or more FPCs to restart unexpectedly. During FPC restarts core files will be generated. While the core file is generated traffic will be disrupted. Sustained receipt of large traffic flows and reconvergence-like situations may sustain the Denial of Service (DoS) situation. This issue affects: Juniper Networks Junos OS: 18.1 version 18.1R2 and later versions prior to 18.1R3-S10 on PTX Series, QFX10K Series.
Source: sirt@juniper.net
NVD status: Analyzed

Risk scores

CVSS 3.1

Type: Primary
Base score: 5.9
Impact score: 3.6
Exploitability score: 2.2
Vector string: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity: MEDIUM

CVSS 2.0

Type: Primary
Base score: 4.3
Impact score: 2.9
Exploitability score: 8.6
Vector string: AV:N/AC:M/Au:N/C:N/I:N/A:P

Weaknesses

nvd@nist.gov: CWE-362
sirt@juniper.net: CWE-362

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:juniper:junos:18.1:r2:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "2EF6F4C1-6A7E-474F-89BC-7A3C50FD8CAC"
          },
          {
            "criteria": "cpe:2.3:o:juniper:junos:18.1:r2-s1:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "84F5BCBA-404B-4BC9-B363-CE6D231B0D6D"
          },
          {
            "criteria": "cpe:2.3:o:juniper:junos:18.1:r2-s2:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "18A4CA3E-DA61-49CC-8476-3A476CCB2B83"
          },
          {
            "criteria": "cpe:2.3:o:juniper:junos:18.1:r2-s4:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "A7380B3E-09F5-4497-86C6-11EF56BD89F1"
          },
          {
            "criteria": "cpe:2.3:o:juniper:junos:18.1:r3:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "658841A9-BEC9-433E-81D0-47DE82887C4F"
          },
          {
            "criteria": "cpe:2.3:o:juniper:junos:18.1:r3-s1:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "5AD05209-1274-4F8A-9FA2-A1A8DFCC5755"
          },
          {
            "criteria": "cpe:2.3:o:juniper:junos:18.1:r3-s2:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "C97683B3-A07B-428F-9535-C49B55305679"
          },
          {
            "criteria": "cpe:2.3:o:juniper:junos:18.1:r3-s3:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "A14CE132-C56B-43D8-A248-AB6A2D1A7B6C"
          },
          {
            "criteria": "cpe:2.3:o:juniper:junos:18.1:r3-s4:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "73978DD8-BD92-4872-8F35-AF2B9BCA1ECB"
          },
          {
            "criteria": "cpe:2.3:o:juniper:junos:18.1:r3-s5:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "678F57D1-2595-4AF3-BB87-AF2E1FE3CBB9"
          },
          {
            "criteria": "cpe:2.3:o:juniper:junos:18.1:r3-s6:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "7988CE92-71D2-4EEC-B596-4A60E2C1136A"
          },
          {
            "criteria": "cpe:2.3:o:juniper:junos:18.1:r3-s7:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "330D176F-8DAD-440C-A623-44FA233FAB01"
          },
          {
            "criteria": "cpe:2.3:o:juniper:junos:18.1:r3-s8:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "8CC5EAB8-1364-4325-9F01-BE7CC479C29D"
          },
          {
            "criteria": "cpe:2.3:o:juniper:junos:18.1:r3-s9:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "4E2E933A-852F-4257-860D-09638EE0D2F3"
          }
        ],
        "operator": "OR"
      },
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:h:juniper:ptx1000:-:*:*:*:*:*:*:*",
            "vulnerable": false,
            "matchCriteriaId": "0E6DF99D-E438-4943-BC32-F2821E72AE0B"
          },
          {
            "criteria": "cpe:2.3:h:juniper:ptx10001-36mr:-:*:*:*:*:*:*:*",
            "vulnerable": false,
            "matchCriteriaId": "C188428C-0558-44FB-845C-E885DE9A0733"
          },
          {
            "criteria": "cpe:2.3:h:juniper:ptx10002:-:*:*:*:*:*:*:*",
            "vulnerable": false,
            "matchCriteriaId": "82B22AC2-B794-4F12-9EB3-9AA6E4B19831"
          },
          {
            "criteria": "cpe:2.3:h:juniper:ptx10003:-:*:*:*:*:*:*:*",
            "vulnerable": false,
            "matchCriteriaId": "5BD05415-9F94-4EB8-805A-C9C0FFA9D0DF"
          },
          {
            "criteria": "cpe:2.3:h:juniper:ptx10004:-:*:*:*:*:*:*:*",
            "vulnerable": false,
            "matchCriteriaId": "C432E543-37F5-4CA0-B239-2B97C6A16907"
          },
          {
            "criteria": "cpe:2.3:h:juniper:ptx10008:-:*:*:*:*:*:*:*",
            "vulnerable": false,
            "matchCriteriaId": "65A64A26-4606-4D33-8958-5A3B7FFC4CDB"
          },
          {
            "criteria": "cpe:2.3:h:juniper:ptx10016:-:*:*:*:*:*:*:*",
            "vulnerable": false,
            "matchCriteriaId": "1879799F-18B2-4958-AA90-FD19348C889F"
          },
          {
            "criteria": "cpe:2.3:h:juniper:ptx3000:-:*:*:*:*:*:*:*",
            "vulnerable": false,
            "matchCriteriaId": "516476F9-7D4C-494F-99AA-750F4467CD15"
          },
          {
            "criteria": "cpe:2.3:h:juniper:ptx5000:-:*:*:*:*:*:*:*",
            "vulnerable": false,
            "matchCriteriaId": "654140A0-FEC0-4DB4-83BF-ECCB000DFA4D"
          },
          {
            "criteria": "cpe:2.3:h:juniper:qfx10002:-:*:*:*:*:*:*:*",
            "vulnerable": false,
            "matchCriteriaId": "F1401145-D8EC-4DB9-9CDE-9DE6C0D000C5"
          },
          {
            "criteria": "cpe:2.3:h:juniper:qfx10008:-:*:*:*:*:*:*:*",
            "vulnerable": false,
            "matchCriteriaId": "1453E42A-77B3-4922-8EC3-1A5668C39550"
          },
          {
            "criteria": "cpe:2.3:h:juniper:qfx10016:-:*:*:*:*:*:*:*",
            "vulnerable": false,
            "matchCriteriaId": "26408465-BD6A-4416-B98E-691A5F651080"
          }
        ],
        "operator": "OR"
      }
    ],
    "operator": "AND"
  }
]

Overview

Risk scores

CVSS 3.1

CVSS 2.0

Weaknesses

Social media

Configurations

References