CVE-2024-47505: Junos OS Evolved: Specific low privileged CLI commands and SNMP GET requests can trigger a resource leak #1
First published: Fri Oct 11 2024(Updated: )
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 21.4R3-S7-EVO, * 22.1 versions before 22.1R3-S6-EVO, * 22.2 versions before 22.2R3-EVO, * 22.3 versions before 22.3R3-EVO, * 22.4 versions before 22.4R2-EVO. Please note that this issue is similar to, but different from CVE-2024-47508 and CVE-2024-47509.
Credit: sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Juniper Networks Junos OS | <21.4R3-S7-EVO<22.1R3-S6-EVO<22.2R3-EVO<22.3R3-EVO<22.4R2-EVO |
Remedy
The following software releases have been updated to resolve this specific issue: 21.4R3-S7-EVO, 22.1R3-S6-EVO, 22.2R3-EVO, 22.3R3-EVO, 22.4R2-EVO, 23.2R1-EVO, and all subsequent releases.
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2024-47505?
CVE-2024-47505 is classified as a high severity vulnerability due to its potential to cause Denial of Service (DoS).
How do I fix CVE-2024-47505?
To mitigate CVE-2024-47505, update to a fixed version of Junos OS Evolved that addresses this vulnerability.
What is affected by CVE-2024-47505?
CVE-2024-47505 affects multiple versions of Juniper Networks Junos OS Evolved, specifically versions prior to 21.4R3-S7-EVO and others listed.
What type of vulnerability is CVE-2024-47505?
CVE-2024-47505 is an Allocation of Resources Without Limits or Throttling vulnerability that can lead to crashes.
Who can exploit CVE-2024-47505?
CVE-2024-47505 can be exploited by an authenticated, network-based attacker.
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