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[email protected]CVE-2021-31369

HistoryOct 19, 2021 - 7:15 p.m.

CVE-2021-31369

2021-10-1919:15:10

CWE-770

[email protected]

web.nvd.nist.gov

juniper networks

junos os

mx series

ms-mpc

ms-mic

cve-2021-31369

dos

security vulnerability

network attack

resource allocation

cos rule

traffic processing

nvd

cybersecurity

information security.

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

5.1 Medium

AI Score

Confidence

High

4.3 Medium

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:N/A:P

0.001 Low

EPSS

Percentile

34.7%

JSON

On MX Series platforms with MS-MPC/MS-MIC, an Allocation of Resources Without Limits or Throttling vulnerability in Juniper Networks Junos OS allows an unauthenticated network attacker to cause a partial Denial of Service (DoS) with a high rate of specific traffic. If a Class of Service (CoS) rule is attached to the service-set and a high rate of specific traffic is processed by this service-set, for some of the other traffic which has services applied and is being processed by this MS-MPC/MS-MIC drops will be observed. Continued receipted of this high rate of specific traffic will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS on MX Series with MS-MPC/MS-MIC: All versions prior to 17.4R3-S5; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R3-S9; 19.1 versions prior to 19.1R3-S6; 19.2 versions prior to 19.2R1-S7, 19.2R3-S3; 19.3 versions prior to 19.3R2-S7, 19.3R3-S3; 19.4 versions prior to 19.4R3-S5; 20.1 versions prior to 20.1R2-S2, 20.1R3-S1; 20.2 versions prior to 20.2R3-S2; 20.3 versions prior to 20.3R3; 20.4 versions prior to 20.4R2-S1, 20.4R3; 21.1 versions prior to 21.1R1-S1, 21.1R2.

Affected configurations

NVD

Node

juniperjunosRange<17.4

juniperjunosMatch17.4-

juniperjunosMatch17.4r1

juniperjunosMatch17.4r1-s1

juniperjunosMatch17.4r1-s2

juniperjunosMatch17.4r1-s3

juniperjunosMatch17.4r1-s4

juniperjunosMatch17.4r1-s5

juniperjunosMatch17.4r1-s6

juniperjunosMatch17.4r1-s7

juniperjunosMatch17.4r2

juniperjunosMatch17.4r2-s1

juniperjunosMatch17.4r2-s10

juniperjunosMatch17.4r2-s11

juniperjunosMatch17.4r2-s12

juniperjunosMatch17.4r2-s13

juniperjunosMatch17.4r2-s2

juniperjunosMatch17.4r2-s3

juniperjunosMatch17.4r2-s4

juniperjunosMatch17.4r2-s5

juniperjunosMatch17.4r2-s6

juniperjunosMatch17.4r2-s7

juniperjunosMatch17.4r2-s8

juniperjunosMatch17.4r2-s9

juniperjunosMatch17.4r3

juniperjunosMatch17.4r3-s1

juniperjunosMatch17.4r3-s2

juniperjunosMatch17.4r3-s3

juniperjunosMatch17.4r3-s4

juniperjunosMatch18.3-

juniperjunosMatch18.3r

juniperjunosMatch18.3r1

juniperjunosMatch18.3r1-s1

juniperjunosMatch18.3r1-s2

juniperjunosMatch18.3r1-s3

juniperjunosMatch18.3r1-s4

juniperjunosMatch18.3r1-s5

juniperjunosMatch18.3r1-s6

juniperjunosMatch18.3r2

juniperjunosMatch18.3r2-s1

juniperjunosMatch18.3r2-s2

juniperjunosMatch18.3r2-s3

juniperjunosMatch18.3r2-s4

juniperjunosMatch18.3r3

juniperjunosMatch18.3r3-s1

juniperjunosMatch18.3r3-s2

juniperjunosMatch18.3r3-s3

juniperjunosMatch18.3r3-s4

juniperjunosMatch18.4-

juniperjunosMatch18.4r1

juniperjunosMatch18.4r1-s1

juniperjunosMatch18.4r1-s2

juniperjunosMatch18.4r1-s3

juniperjunosMatch18.4r1-s4

juniperjunosMatch18.4r1-s5

juniperjunosMatch18.4r1-s6

juniperjunosMatch18.4r1-s7

juniperjunosMatch18.4r2

juniperjunosMatch18.4r2-s1

juniperjunosMatch18.4r2-s2

juniperjunosMatch18.4r2-s3

juniperjunosMatch18.4r2-s4

juniperjunosMatch18.4r2-s5

juniperjunosMatch18.4r2-s6

juniperjunosMatch18.4r2-s7

juniperjunosMatch18.4r2-s8

juniperjunosMatch18.4r3

juniperjunosMatch18.4r3-s1

juniperjunosMatch18.4r3-s2

juniperjunosMatch18.4r3-s3

juniperjunosMatch18.4r3-s4

juniperjunosMatch18.4r3-s5

juniperjunosMatch18.4r3-s6

juniperjunosMatch18.4r3-s7

juniperjunosMatch18.4r3-s8

juniperjunosMatch19.1-

juniperjunosMatch19.1r1

juniperjunosMatch19.1r1-s1

juniperjunosMatch19.1r1-s2

juniperjunosMatch19.1r1-s3

juniperjunosMatch19.1r1-s4

juniperjunosMatch19.1r1-s5

juniperjunosMatch19.1r1-s6

juniperjunosMatch19.1r2

juniperjunosMatch19.1r2-s1

juniperjunosMatch19.1r2-s2

juniperjunosMatch19.1r2-s3

juniperjunosMatch19.1r3

juniperjunosMatch19.1r3-s1

juniperjunosMatch19.1r3-s2

juniperjunosMatch19.1r3-s3

juniperjunosMatch19.1r3-s4

juniperjunosMatch19.1r3-s5

juniperjunosMatch19.2-

juniperjunosMatch19.2r1

juniperjunosMatch19.2r1-s1

juniperjunosMatch19.2r1-s2

juniperjunosMatch19.2r1-s3

juniperjunosMatch19.2r1-s4

juniperjunosMatch19.2r1-s5

juniperjunosMatch19.2r1-s6

juniperjunosMatch19.2r3

juniperjunosMatch19.2r3-s1

juniperjunosMatch19.2r3-s2

juniperjunosMatch19.3-

juniperjunosMatch19.3r1

juniperjunosMatch19.3r1-s1

juniperjunosMatch19.3r2

juniperjunosMatch19.3r2-s1

juniperjunosMatch19.3r2-s2

juniperjunosMatch19.3r2-s3

juniperjunosMatch19.3r2-s4

juniperjunosMatch19.3r2-s5

juniperjunosMatch19.3r2-s6

juniperjunosMatch19.3r3

juniperjunosMatch19.3r3-s1

juniperjunosMatch19.3r3-s2

juniperjunosMatch19.4r1

juniperjunosMatch19.4r1-s1

juniperjunosMatch19.4r1-s2

juniperjunosMatch19.4r1-s3

juniperjunosMatch19.4r1-s4

juniperjunosMatch19.4r2

juniperjunosMatch19.4r2-s1

juniperjunosMatch19.4r2-s2

juniperjunosMatch19.4r2-s3

juniperjunosMatch19.4r2-s4

juniperjunosMatch19.4r2-s5

juniperjunosMatch19.4r3

juniperjunosMatch19.4r3-s1

juniperjunosMatch19.4r3-s2

juniperjunosMatch19.4r3-s3

juniperjunosMatch19.4r3-s4

juniperjunosMatch20.1r1

juniperjunosMatch20.1r1-s1

juniperjunosMatch20.1r1-s2

juniperjunosMatch20.1r1-s3

juniperjunosMatch20.1r1-s4

juniperjunosMatch20.1r2

juniperjunosMatch20.1r2-s1

juniperjunosMatch20.1r3

juniperjunosMatch20.2r1

juniperjunosMatch20.2r1-s1

juniperjunosMatch20.2r1-s2

juniperjunosMatch20.2r1-s3

juniperjunosMatch20.2r2

juniperjunosMatch20.2r2-s1

juniperjunosMatch20.2r2-s2

juniperjunosMatch20.2r2-s3

juniperjunosMatch20.2r3

juniperjunosMatch20.2r3-s1

juniperjunosMatch20.3r1

juniperjunosMatch20.3r1-s1

juniperjunosMatch20.3r2

juniperjunosMatch20.3r2-s1

juniperjunosMatch20.4r1

juniperjunosMatch20.4r1-s1

juniperjunosMatch20.4r2

juniperjunosMatch21.1r1

AND

junipermx10Match-

junipermx10000Match-

junipermx10003Match-

junipermx10008Match-

junipermx10016Match-

junipermx104Match-

junipermx150Match-

junipermx2008Match-

junipermx2010Match-

junipermx2020Match-

junipermx204Match-

junipermx240Match-

junipermx40Match-

junipermx480Match-

junipermx5Match-

junipermx80Match-

junipermx960Match-

CPENameOperatorVersion
juniper:junosjuniper junoslt17.4
juniper:junosjuniper junoseq18.3
juniper:junosjuniper junoseq18.4
juniper:junosjuniper junoseq19.1
juniper:junosjuniper junoseq19.2
juniper:junosjuniper junoseq19.3
juniper:junosjuniper junoseq19.4
juniper:junosjuniper junoseq20.1
juniper:junosjuniper junoseq20.2
juniper:junosjuniper junoseq20.3

CPE	Name	Operator	Version
juniper:junos	juniper junos	lt	17.4
juniper:junos	juniper junos	eq	18.3
juniper:junos	juniper junos	eq	18.4
juniper:junos	juniper junos	eq	19.1
juniper:junos	juniper junos	eq	19.2
juniper:junos	juniper junos	eq	19.3
juniper:junos	juniper junos	eq	19.4
juniper:junos	juniper junos	eq	20.1
juniper:junos	juniper junos	eq	20.2
juniper:junos	juniper junos	eq	20.3

Rows per page:

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CNA Affected

[
  {
    "platforms": [
      "MX Series"
    ],
    "product": "Junos OS",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "17.4R3-S5",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      },
      {
        "lessThan": "18.3R3-S5",
        "status": "affected",
        "version": "18.3",
        "versionType": "custom"
      },
      {
        "lessThan": "18.4R3-S9",
        "status": "affected",
        "version": "18.4",
        "versionType": "custom"
      },
      {
        "lessThan": "19.1R3-S6",
        "status": "affected",
        "version": "19.1",
        "versionType": "custom"
      },
      {
        "lessThan": "19.2R1-S7, 19.2R3-S3",
        "status": "affected",
        "version": "19.2",
        "versionType": "custom"
      },
      {
        "lessThan": "19.3R2-S7, 19.3R3-S3",
        "status": "affected",
        "version": "19.3",
        "versionType": "custom"
      },
      {
        "lessThan": "19.4R3-S5",
        "status": "affected",
        "version": "19.4",
        "versionType": "custom"
      },
      {
        "lessThan": "20.1R2-S2, 20.1R3-S1",
        "status": "affected",
        "version": "20.1",
        "versionType": "custom"
      },
      {
        "lessThan": "20.2R3-S2",
        "status": "affected",
        "version": "20.2",
        "versionType": "custom"
      },
      {
        "lessThan": "20.3R3",
        "status": "affected",
        "version": "20.3",
        "versionType": "custom"
      },
      {
        "lessThan": "20.4R2-S1, 20.4R3",
        "status": "affected",
        "version": "20.4",
        "versionType": "custom"
      },
      {
        "lessThan": "21.1R1-S1, 21.1R2",
        "status": "affected",
        "version": "21.1",
        "versionType": "custom"
      }
    ]
  }
]

References

kb.juniper.net/JSA11231

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

5.1 Medium

AI Score

Confidence

High

4.3 Medium

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:N/A:P

0.001 Low

EPSS

Percentile

34.7%

JSON

Related for CVE-2021-31369

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