An Allocation of Resources Without Limits or Throttling vulnerability in the PFE management daemon (evo-pfemand) of Juniper Networks Junos OS Evolved allows an authenticated, network-based attacker to cause an FPC crash leading to a Denial of Service (DoS).When specific SNMP GET operations or specific low-priviledged CLI commands are executed, a GUID resource leak will occur, eventually leading to exhaustion and resulting in FPCs to hang. Affected FPCs need to be manually restarted to recover.

GUID exhaustion will trigger a syslog message like one of the following:

evo-pfemand[<pid>]: get_next_guid: Ran out of Guid Space ...
evo-aftmand-zx[<pid>]: get_next_guid: Ran out of Guid Space ...
The leak can be monitored by running the following command and taking note of the values in the rightmost column labeled Guids:





user@host> show platform application-info allocations app evo-pfemand/evo-pfemand



In case one or more of these values are constantly increasing the leak is happening.

This issue affects Junos OS Evolved:



  *  All versions before 21.2R3-S8-EVO,
  *  21.3 versions before 21.3R3-EVO;
  *  21.4 versions before 22.1R2-EVO,

  *  22.1 versions before 22.1R1-S1-EVO, 22.1R2-EVO.





Please note that this issue is similar to, but different from CVE-2024-47505 and CVE-2024-47509.

Juniper Networks, Inc. CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:M/U:X

Juniper Networks, Inc. AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Juniper Networks, Inc. CWE-770

Juniper Networks, Inc. https://supportportal.juniper.net/ [No types assigned]