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[email protected]CVE-2021-31351

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

CVE-2021-31351

2021-10-1919:15:08

CWE-754

[email protected]

web.nvd.nist.gov

cve-2021-31351

juniper networks

junos os

denial of service

packet processing

security vulnerability

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.001 Low

EPSS

Percentile

42.7%

JSON

An Improper Check for Unusual or Exceptional Conditions in packet processing on the MS-MPC/MS-MIC utilized by Juniper Networks Junos OS allows a malicious attacker to send a specific packet, triggering the MS-MPC/MS-MIC to reset, causing a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue only affects specific versions of Juniper Networks Junos OS on MX Series: 17.3R3-S11; 17.4R2-S13; 17.4R3 prior to 17.4R3-S5; 18.1R3-S12; 18.2R2-S8, 18.2R3-S7, 18.2R3-S8; 18.3R3-S4; 18.4R3-S7; 19.1R3-S4, 19.1R3-S5; 19.2R1-S6; 19.3R3-S2; 19.4R2-S4, 19.4R2-S5; 19.4R3-S2; 20.1R2-S1; 20.2R2-S2, 20.2R2-S3, 20.2R3; 20.3R2, 20.3R2-S1; 20.4R1, 20.4R1-S1, 20.4R2; 21.1R1; This issue does not affect any version of Juniper Networks Junos OS prior to 15.1X49-D240;

Affected configurations

NVD

Node

juniperjunosMatch17.3r3-s11

juniperjunosMatch17.4r2-s13

juniperjunosMatch17.4r3

juniperjunosMatch17.4r3-s1

juniperjunosMatch17.4r3-s2

juniperjunosMatch17.4r3-s3

juniperjunosMatch17.4r3-s4

juniperjunosMatch18.1r3-s12

juniperjunosMatch18.2r2-s8

juniperjunosMatch18.2r3-s7

juniperjunosMatch18.2r3-s8

juniperjunosMatch18.3r3-s4

juniperjunosMatch18.4r3-s7

juniperjunosMatch19.1r3-s4

juniperjunosMatch19.1r3-s5

juniperjunosMatch19.2r1-s6

juniperjunosMatch19.3r3-s2

juniperjunosMatch19.4r2-s4

juniperjunosMatch19.4r2-s5

juniperjunosMatch19.4r3-s2

juniperjunosMatch20.1r2-s1

juniperjunosMatch20.2r2-s2

juniperjunosMatch20.2r2-s3

juniperjunosMatch20.2r3

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 junoseq17.3
juniper:junosjuniper junoseq17.4
juniper:junosjuniper junoseq18.1
juniper:junosjuniper junoseq18.2
juniper:junosjuniper junoseq18.3
juniper:junosjuniper junoseq18.4
juniper:junosjuniper junoseq19.1
juniper:junosjuniper junoseq19.2
juniper:junosjuniper junoseq19.3
juniper:junosjuniper junoseq19.4

CPE	Name	Operator	Version
juniper:junos	juniper junos	eq	17.3
juniper:junos	juniper junos	eq	17.4
juniper:junos	juniper junos	eq	18.1
juniper:junos	juniper junos	eq	18.2
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

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CNA Affected

[
  {
    "product": "Junos OS",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "15.1",
        "status": "unaffected",
        "version": "unspecified",
        "versionType": "custom"
      },
      {
        "lessThan": "17.3R3-S11",
        "status": "unaffected",
        "version": "17.3",
        "versionType": "custom"
      },
      {
        "lessThan": "17.4*",
        "status": "unaffected",
        "version": "17.4R3",
        "versionType": "custom"
      }
    ]
  },
  {
    "platforms": [
      "MX Series"
    ],
    "product": "Junos OS",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "status": "affected",
        "version": "17.3R3-S11"
      },
      {
        "status": "affected",
        "version": "18.1R3-S12"
      },
      {
        "status": "affected",
        "version": "18.3R3-S4"
      },
      {
        "status": "affected",
        "version": "18.4R3-S7"
      },
      {
        "status": "affected",
        "version": "19.1R3-S4, 19.1R3-S5"
      },
      {
        "status": "affected",
        "version": "19.2R1-S6"
      },
      {
        "status": "affected",
        "version": "19.3R3-S2"
      },
      {
        "status": "affected",
        "version": "19.4R3-S2"
      },
      {
        "status": "affected",
        "version": "20.1R2-S1"
      },
      {
        "status": "affected",
        "version": "20.2R3"
      },
      {
        "status": "affected",
        "version": "20.3R2"
      },
      {
        "lessThan": "17.4*",
        "status": "affected",
        "version": "17.4R2-S13",
        "versionType": "custom"
      },
      {
        "lessThan": "18.2*",
        "status": "affected",
        "version": "18.2R2-S8, 18.2R3-S7",
        "versionType": "custom"
      },
      {
        "lessThan": "18.4*",
        "status": "affected",
        "version": "18.4R1-S8, 18.4R2-S7",
        "versionType": "custom"
      },
      {
        "lessThan": "19.4*",
        "status": "affected",
        "version": "19.4R2-S4",
        "versionType": "custom"
      },
      {
        "lessThan": "20.2*",
        "status": "affected",
        "version": "20.2R2-S2",
        "versionType": "custom"
      },
      {
        "lessThan": "20.3*",
        "status": "affected",
        "version": "20.3R1-S2",
        "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/JSA11216

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.001 Low

EPSS

Percentile

42.7%

JSON

Related for CVE-2021-31351

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