Out-of-bounds write in Junos OS and Junos OS Evolved - CVE-2021-31354

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU57437

Out-of-bounds write in Junos OS and Junos OS Evolved - CVE-2021-31354

Published: October 19, 2021


Vulnerability identifier: #VU57437
CSH Severity: Low
CVSS v4: 7.7 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-31354
CWE-ID: CWE-787
Exploitation vector: Adjecent network
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error in the handling of responses by a Juniper Agile License (JAL) Client. A remote attacker on the local network can trigger out-of-bounds write and execute arbitrary code on the target system.


Affected software

Junos OS
Junos OS Evolved

How to mitigate CVE-2021-31354

Install updates from vendor's website.

Junos OS - addressed in versions 19.3R3-S3, 20.1R2-S2, 20.1R3-S1, 20.2R3-S2, 20.3R3, 20.4R3, 21.1R2, 21.2R1
Junos OS Evolved - addressed in versions 21.2R2-EVO, 21.3R1-EVO

External References

Related Security Bulletins