CVE-2023-22400: Junos OS Evolved: A specific SNMP GET operation and a specific CLI commands cause resources to leak and eventually the evo-pfemand process will crash
First published: Thu Jan 12 2023(Updated: )
An Uncontrolled Resource Consumption vulnerability in the PFE management daemon (evo-pfemand) of Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause an FPC crash leading to a Denial of Service (DoS). When a specific SNMP GET operation or a specific CLI command is executed this will cause a GUID resource leak, eventually leading to exhaustion and result in an FPC crash and reboot. GUID exhaustion will trigger a syslog message like one of the following for example: evo-pfemand[<pid>]: get_next_guid: Ran out of Guid Space ... evo-aftmand-zx[<pid>]: get_next_guid: Ran out of Guid Space ... This leak can be monitored by running the following command and taking note of the value in the rightmost column labeled Guids: user@host> show platform application-info allocations app evo-pfemand | match "IFDId|IFLId|Context" Node Application Context Name Live Allocs Fails Guids re0 evo-pfemand net::juniper::interfaces::IFDId 0 3448 0 3448 re0 evo-pfemand net::juniper::interfaces::IFLId 0 561 0 561 user@host> show platform application-info allocations app evo-pfemand | match "IFDId|IFLId|Context" Node Application Context Name Live Allocs Fails Guids re0 evo-pfemand net::juniper::interfaces::IFDId 0 3784 0 3784 re0 evo-pfemand net::juniper::interfaces::IFLId 0 647 0 647 This issue affects Juniper Networks Junos OS Evolved: All versions prior to 20.4R3-S3-EVO; 21.1-EVO version 21.1R1-EVO and later versions; 21.2-EVO versions prior to 21.2R3-S4-EVO; 21.3-EVO version 21.3R1-EVO and later versions; 21.4-EVO versions prior to 21.4R2-EVO.
Credit: sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Juniper Junos Os Evolved | =20.4 | |
| Juniper Junos Os Evolved | =20.4-r1 | |
| Juniper Junos Os Evolved | =20.4-r1-s1 | |
| Juniper Junos Os Evolved | =20.4-r1-s2 | |
| Juniper Junos Os Evolved | =20.4-r2 | |
| Juniper Junos Os Evolved | =20.4-r2-s1 | |
| Juniper Junos Os Evolved | =20.4-r2-s2 | |
| Juniper Junos Os Evolved | =20.4-r2-s3 | |
| Juniper Junos Os Evolved | =20.4-r3 | |
| Juniper Junos Os Evolved | =20.4-r3-s1 | |
| Juniper Junos Os Evolved | =20.4-r3-s2 | |
| Juniper Junos Os Evolved | =21.1-r1 | |
| Juniper Junos Os Evolved | =21.1-r1-s1 | |
| Juniper Junos Os Evolved | =21.1-r2 | |
| Juniper Junos Os Evolved | =21.1-r3 | |
| Juniper Junos Os Evolved | =21.1-r3-s1 | |
| Juniper Junos Os Evolved | =21.2 | |
| Juniper Junos Os Evolved | =21.2-r1 | |
| Juniper Junos Os Evolved | =21.2-r1-s1 | |
| Juniper Junos Os Evolved | =21.2-r1-s2 | |
| Juniper Junos Os Evolved | =21.2-r2 | |
| Juniper Junos Os Evolved | =21.2-r2-s1 | |
| Juniper Junos Os Evolved | =21.2-r2-s2 | |
| Juniper Junos Os Evolved | =21.2-r3 | |
| Juniper Junos Os Evolved | =21.2-r3-s1 | |
| Juniper Junos Os Evolved | =21.2-r3-s2 | |
| Juniper Junos Os Evolved | =21.2-r3-s3 | |
| Juniper Junos Os Evolved | =21.3-r1 | |
| Juniper Junos Os Evolved | =21.3-r1-s1 | |
| Juniper Junos Os Evolved | =21.3-r2 | |
| Juniper Junos Os Evolved | =21.3-r2-s1 | |
| Juniper Junos Os Evolved | =21.3-r2-s2 | |
| Juniper Junos Os Evolved | =21.3-r3 | |
| Juniper Junos Os Evolved | =21.4 | |
| Juniper Junos Os Evolved | =21.4-r1 | |
| Juniper Junos Os Evolved | =21.4-r1-s1 | |
| Juniper Junos Os Evolved | =21.4-r1-s2 |
Remedy
The following software releases have been updated to resolve this specific issue: 20.4R3-S3-EVO, 21.2R3-S4-EVO, 21.4R2-EVO, 22.1R1-EVO, and all subsequent releases.
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Reference Links
Frequently Asked Questions
What is CVE-2023-22400?
CVE-2023-22400 is an Uncontrolled Resource Consumption vulnerability in the PFE management daemon (evo-pfemand) of Juniper Networks Junos OS Evolved.
How does CVE-2023-22400 affect Juniper Junos OS Evolved?
CVE-2023-22400 allows an unauthenticated, network-based attacker to cause an FPC crash leading to a Denial of Service (DoS) in Juniper Junos OS Evolved.
What is the severity level of CVE-2023-22400?
CVE-2023-22400 has a severity level of 7.5 (high).
How can I fix CVE-2023-22400?
To fix CVE-2023-22400, it is recommended to apply the necessary updates provided by Juniper Networks.
Where can I find more information about CVE-2023-22400?
You can find more information about CVE-2023-22400 on the Juniper Networks knowledge base at the following link: https://kb.juniper.net/JSA70196
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