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THREATINT
PUBLISHED

CVE-2025-30658

Junos OS: SRX Series: On devices with Anti-Virus enabled, malicious server responses will cause memory to leak ultimately causing forwarding to stop



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: (<node>.)<fpc> Warning: jbuf pool id <#> utilization level (<current level>%) is above <threshold>%! 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.

Reserved 2025-03-24 | Published 2025-04-09 | Updated 2025-04-09 | Assigner juniper


HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:U/RE:M

Problem types

CWE-401 Missing Release of Memory after Effective Lifetime

Product status

Default status
unaffected

Any version before 21.2R3-S9
affected

21.4 before 21.4R3-S10
affected

22.2 before 22.2R3-S6
affected

22.4 before 22.4R3-S6
affected

23.2 before 23.2R2-S3
affected

23.4 before 23.4R2-S3
affected

24.2 before 24.2R2
affected

Timeline

2025-04-09:Initial Publication

References

supportportal.juniper.net/JSA96469 vendor-advisory

cve.org (CVE-2025-30658)

nvd.nist.gov (CVE-2025-30658)

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