CVE-2021-0253

Summary

NFX Series devices using Juniper Networks Junos OS are susceptible to a local command execution vulnerability thereby allowing an attacker to elevate their privileges via the Junos Device Management Daemon (JDMD) process. This issue affects Juniper Networks Junos OS on NFX Series 17.2 version 17.2R1 and later versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R2-S5, 18.4R3-S5; 19.1 versions prior to 19.1R1-S3; 19.2 version 19.1R2 and later versions prior to 19.2R3; 19.3 versions prior to 19.3R3; 19.4 versions prior to 19.4R2-S2. 19.4 versions 19.4R3 and above. This issue does not affect Juniper Networks Junos OS versions prior to 17.2R1. This issue does not affect the JDMD as used by Junos Node Slicing such as External Servers use in conjunction with Junos Node Slicing and In-Chassis Junos Node Slicing on MX480, MX960, MX2008, MX2010, MX2020.

Affected Software

Weaknesses

• CWE-77: CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')
• 20 - Improper Input Validation

Workarounds

There are no viable workarounds for this issue.

To reduce the risk of exploitation of this issue, use access lists or firewall filters to limit access to only trusted administrative networks, hosts and users.

ADP Enrichment

CVE Program Container

Additional References

• https://kb.juniper.net/JSA11146
• https://github.com/orangecertcc/security-research/security/advisories/GHSA-vrf9-cjcp-rwcr

References

• https://kb.juniper.net/JSA11146
• https://github.com/orangecertcc/security-research/security/advisories/GHSA-vrf9-cjcp-rwcr

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