What is CVE-2021-0297?

CVE-2021-0297 is a medium-severity vulnerability in Juniper Junos OS Evolved, classified under Improper Handling of Exceptional Conditions. CVSS score: 6.5/10. Published 2021-10-19.

How severe is CVE-2021-0297?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Juniper Junos OS Evolved

CVE-2021-0297

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.

EPSS: 0.007 (49.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Juniper Junos_os_evolved — versions 20.3, 20.4, 21.1
Juniper Networks Junos Os Evolved — versions unspecified, 20.4, 21.1

Weakness classification (CWE)

CWE-755 — Improper Handling of Exceptional Conditions

References

sirt@juniper.net (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2021-0297?: CVE-2021-0297 is a medium-severity vulnerability in Juniper Junos OS Evolved, classified under Improper Handling of Exceptional Conditions. CVSS score: 6.5/10. Published 2021-10-19.
How severe is CVE-2021-0297?: Medium severity. CVSS v3 base score is 6.5 out of 10.