CVE-2024-47505
Severity CVSS v4.0:
HIGH
Type:
Unavailable / Other
Publication date:
11/10/2024
Last modified:
15/10/2024
Description
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.<br />
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GUID exhaustion will trigger a syslog message like one of the following:<br />
<br />
evo-pfemand[]: get_next_guid: Ran out of Guid Space ...<br />
evo-aftmand-zx[]: get_next_guid: Ran out of Guid Space ...<br />
The leak can be monitored by running the following command and taking note of the values in the rightmost column labeled Guids:<br />
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<br />
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user@host> show platform application-info allocations app evo-pfemand/evo-pfemand<br />
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<br />
<br />
In case one or more of these values are constantly increasing the leak is happening.<br />
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This issue affects Junos OS Evolved:<br />
<br />
<br />
<br />
* All versions before 21.4R3-S7-EVO,<br />
* 22.1 versions before 22.1R3-S6-EVO,<br />
* 22.2 versions before 22.2R3-EVO, <br />
<br />
* 22.3 versions before 22.3R3-EVO,<br />
* 22.4 versions before 22.4R2-EVO.<br />
<br />
<br />
<br />
Please note that this issue is similar to, but different from CVE-2024-47508 and CVE-2024-47509.
Impact
Base Score 4.0
7.10
Severity 4.0
HIGH
Base Score 3.x
6.50
Severity 3.x
MEDIUM