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.
Published 2021-10-19 19:15:08
Updated 2021-10-25 15:20:01
View at NVD,   CVE.org

Products affected by CVE-2021-0297

Exploit prediction scoring system (EPSS) score for CVE-2021-0297

0.08%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 36 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-0297

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.4
MEDIUM AV:N/AC:L/Au:N/C:P/I:P/A:N
10.0
4.9
NIST
6.5
MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
3.9
2.5
NIST
6.5
MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
3.9
2.5
Juniper Networks, Inc.

CWE ids for CVE-2021-0297

References for CVE-2021-0297

  • https://kb.juniper.net/JSA11211
    2021-10 Security Bulletin: Junos OS Evolved: BGP and LDP sessions with TCP MD5 authentication established with peers not configured for authentication (CVE-2021-0297) - Juniper Networks
    Vendor Advisory
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