Missing Release of Resource after Effective Lifetime in Junos OS Evolved - CVE-2025-21599
Published: January 9, 2025
Vulnerability identifier: #VU102493
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-21599
CWE-ID: CWE-772
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the Juniper Tunnel Driver (jtd) does not properly release memory when handling IPv6 packets. A remote attacker can send malformed IPv6 packets destined to the device and kernel memory to not be freed, resulting in a denial of service condition.
Affected software
Junos OS Evolved
How to mitigate CVE-2025-21599
Install updates from vendor's website.
Junos OS Evolved - addressed in versions 22.4R3-S5-EVO, 23.2R2-S2-EVO, 23.4R2-S2-EVO, 24.2R1-S2-EVO, 24.2R2-EVO, 24.4R1-EVO