CVE-2021-0297

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

Description

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.

Remediation

Solution:

  • The following software releases have been updated to resolve this specific issue: Junos OS Evolved 20.3R2-S1-EVO, 20.4R2-EVO, 21.1R2-EVO, 21.2R1-EVO, and all subsequent releases.

Workaround:

  • There are no known workarounds for this issue.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.18%
Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS Evolved
Published at:
Updated at:

References

Link Tags
https://kb.juniper.net/JSA11211 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-0297?
CVE-2021-0297 has been scored as a medium severity vulnerability.
How to fix CVE-2021-0297?
To fix CVE-2021-0297: The following software releases have been updated to resolve this specific issue: Junos OS Evolved 20.3R2-S1-EVO, 20.4R2-EVO, 21.1R2-EVO, 21.2R1-EVO, and all subsequent releases.
Is CVE-2021-0297 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-0297 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-0297?
CVE-2021-0297 affects Juniper Networks Junos OS Evolved.
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