CVE-2025-30658 Information

Description

A Missing Release of Memory after Effective Lifetime vulnerability in the Anti-Virus processing of Juniper Networks Junos OS on SRX Series

allows an unauthenticated network-based attacker to cause a Denial-of-Service (DoS).

On all SRX platforms with Anti-Virus enabled if a server sends specific content in the HTTP body of a response to a client request these packets are queued by Anti-Virus processing in Juniper Buffers (jbufs) which are never released. When these jbufs are exhausted the device stops forwarding all transit traffic.

A jbuf memory leak can be noticed from the following logs:

(.) Warning: jbuf pool id <> utilization level (%) is above %!

To recover from this issue the affected device needs to be manually rebooted to free the leaked jbufs.

This issue affects Junos OS on SRX Series: 

all versions before 21.2R3-S9
21.4 versions before 21.4R3-S10
22.2 versions before 22.2R3-S6
22.4 versions before 22.4R3-S6
23.2 versions before 23.2R2-S3
23.4 versions before 23.4R2-S3
24.2 versions before 24.2R2.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://supportportal.juniper.net/JSA96469

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5