CVSS: v3.1: 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)CVSS: v4.0: 8.2 (CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/R:A/RE:M)
A Deadlock vulnerability in the packet forwarding engine (PFE) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).
When a large amount of traffic is processed by ATP Cloud inspection, a deadlock can occur which will result in a PFE crash and restart. Whether the crash occurs, depends on system internal timing that is outside the attackers control.
This issue affects Junos OS on SRX Series:
To be exposed to this issue a minimal configuration like the following needs to be present:[ services advanced-anti-malware policy <aamw-policy-name> ... ][ security policies from-zone <source-zone> to-zone <destination-zone> policy <name> then permit application-services advanced-anti-malware-policy <aamw-policy-name> ]
Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
This issue was seen during production usage.
The following software releases have been updated to resolve this specific issue: 21.3R3-S1, 21.4R3, 22.1R2, 22.2R1-S2, 22.2R2, 22.3R1, and all subsequent releases.
This issue is being tracked as 1661766 which is visible on the Customer Support website.
Note: Juniper SIRT's policy is not to evaluate releases which are beyond End of Engineering (EOE) or End of Life (EOL).
There are no known workarounds for this issue.
2024-10-09: Initial Publication