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cvelistJuniperCVELIST:CVE-2021-0297
HistoryOct 19, 2021 - 6:16 p.m.

CVE-2021-0297 Junos OS Evolved: BGP and LDP sessions with TCP MD5 authentication established with peers not configured for authentication

2021-10-1918:16:23
CWE-755
juniper
www.cve.org
3
juniper networks junos os evolved
bgp
ldp
tcp md5 authentication
vulnerability
confidentiality
network stability
20.3r2-s1-evo
20.4r2-evo
21.1r2-evo

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

EPSS

0.001

Percentile

36.1%

A vulnerability in the processing of TCP MD5 authentication in Juniper Networks Junos OS Evolved may allow a BGP or LDP session configured with MD5 authentication to succeed, even if the peer does not have TCP MD5 authentication enabled. This could lead to untrusted or unauthorized sessions being established, resulting in an impact on confidentiality or stability of the network. This issue affects Juniper Networks Junos OS Evolved: All versions prior to 20.3R2-S1-EVO; 20.4 versions prior to 20.4R2-EVO; 21.1 versions prior to 21.1R2-EVO. Juniper Networks Junos OS is not affected by this issue.

CNA Affected

[
  {
    "product": "Junos OS Evolved",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "20.3R2-S1-EVO",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      },
      {
        "lessThan": "20.4R2-EVO",
        "status": "affected",
        "version": "20.4",
        "versionType": "custom"
      },
      {
        "lessThan": "21.1R2-EVO",
        "status": "affected",
        "version": "21.1",
        "versionType": "custom"
      }
    ]
  }
]

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

EPSS

0.001

Percentile

36.1%

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