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[email protected]CVE-2021-0299

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

CVE-2021-0299

2021-10-1919:15:08

CWE-755

[email protected]

web.nvd.nist.gov

cve-2021-0299

juniper networks

junos os

vulnerability

dos

ipv6

nvd

7.1 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

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 Handling of Exceptional Conditions vulnerability in the processing of a transit or directly received malformed IPv6 packet in Juniper Networks Junos OS results in a kernel crash, causing the device to restart, leading to 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 systems with IPv6 configured. Devices with only IPv4 configured are not vulnerable to this issue. This issue affects Juniper Networks Junos OS: 19.4 versions prior to 19.4R3; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R1-S1, 20.2R2. This issue does not affect Juniper Networks Junos OS versions prior to 19.4R1.

Affected configurations

NVD

Node

juniperjunosMatch19.4-

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

juniperjunosMatch20.1r1

juniperjunosMatch20.1r1-s1

juniperjunosMatch20.1r1-s2

juniperjunosMatch20.1r1-s3

juniperjunosMatch20.1r1-s4

juniperjunosMatch20.2r1

CPENameOperatorVersion
juniper:junosjuniper junoseq19.4
juniper:junosjuniper junoseq20.1
juniper:junosjuniper junoseq20.2

CPE	Name	Operator	Version
juniper:junos	juniper junos	eq	19.4
juniper:junos	juniper junos	eq	20.1
juniper:junos	juniper junos	eq	20.2

CNA Affected

[
  {
    "product": "Junos OS",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "19.4R1",
        "status": "unaffected",
        "version": "unspecified",
        "versionType": "custom"
      },
      {
        "lessThan": "19.4R3",
        "status": "affected",
        "version": "19.4",
        "versionType": "custom"
      },
      {
        "lessThan": "20.1R2",
        "status": "affected",
        "version": "20.1",
        "versionType": "custom"
      },
      {
        "lessThan": "20.2R1-S1, 20.2R2",
        "status": "affected",
        "version": "20.2",
        "versionType": "custom"
      }
    ]
  }
]

References

kb.juniper.net/JSA11213

7.1 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

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

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