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JuniperCVELIST:CVE-2021-31375

HistoryOct 19, 2021 - 6:17 p.m.

CVE-2021-31375 Junos OS: Receipt of a specific BGP update may cause RPKI policy-checks to be bypassed

2021-10-1918:17:13

CWE-20

CWE-358

juniper

www.cve.org

junos os

bgp update

rpki policy-checks

improper input validation

cve-2021-31375

juniper networks

rpd

origin validation

rpki

vulnerability

CVSS3

7.2

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

LOW

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

AI Score

7.1

Confidence

High

EPSS

0.001

Percentile

36.1%

JSON

An Improper Input Validation vulnerability in routing process daemon (RPD) of Juniper Networks Junos OS devices configured with BGP origin validation using Resource Public Key Infrastructure (RPKI), allows an attacker to send a specific BGP update which may cause RPKI policy-checks to be bypassed. This, in turn, may allow a spoofed advertisement to be accepted or propagated. This issue affects: Juniper Networks Junos OS 12.3 versions prior to 12.3R12-S18; 15.1 versions prior to 15.1R7-S9; 17.2 versions prior to 17.2R3-S3; 17.3 versions prior to 17.3R3-S7; 17.4 versions prior to 17.4R2-S9, 17.4R3; 18.1 versions prior to 18.1R3-S13; 18.2 versions prior to 18.2R3-S3; 18.3 versions prior to 18.3R3-S1; 18.4 versions prior to 18.4R3; 19.1 versions prior to 19.1R2; 19.2 versions prior to 19.2R2; 19.3 versions prior to 19.3R2.

CNA Affected

[
  {
    "product": "Junos OS",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "12.3R12-S18",
        "status": "affected",
        "version": "12.3",
        "versionType": "custom"
      },
      {
        "lessThan": "15.1R7-S9",
        "status": "affected",
        "version": "15.1",
        "versionType": "custom"
      },
      {
        "lessThan": "17.2R3-S3",
        "status": "affected",
        "version": "17.2",
        "versionType": "custom"
      },
      {
        "lessThan": "17.3R3-S7",
        "status": "affected",
        "version": "17.3",
        "versionType": "custom"
      },
      {
        "lessThan": "17.4R2-S9, 17.4R3",
        "status": "affected",
        "version": "17.4",
        "versionType": "custom"
      },
      {
        "lessThan": "18.1R3-S13",
        "status": "affected",
        "version": "18.1",
        "versionType": "custom"
      },
      {
        "lessThan": "18.2R3-S3",
        "status": "affected",
        "version": "18.2",
        "versionType": "custom"
      },
      {
        "lessThan": "18.3R3-S1",
        "status": "affected",
        "version": "18.3",
        "versionType": "custom"
      },
      {
        "lessThan": "18.4R3",
        "status": "affected",
        "version": "18.4",
        "versionType": "custom"
      },
      {
        "lessThan": "19.1R2",
        "status": "affected",
        "version": "19.1",
        "versionType": "custom"
      },
      {
        "lessThan": "19.2R2",
        "status": "affected",
        "version": "19.2",
        "versionType": "custom"
      },
      {
        "lessThan": "19.3R2",
        "status": "affected",
        "version": "19.3",
        "versionType": "custom"
      }
    ]
  }
]

References

kb.juniper.net/JSA11240

CVSS3

7.2

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

LOW

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

AI Score

7.1

Confidence

High

EPSS

0.001

Percentile

36.1%

JSON

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