CVE-2023-22408: Junos OS: SRX 5000 Series: Upon processing of a specific SIP packet an FPC can crash
First published: Thu Jan 12 2023(Updated: )
An Improper Validation of Array Index vulnerability in the SIP ALG of Juniper Networks Junos OS on SRX 5000 Series allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS). When an attacker sends an SIP packets with a malformed SDP field then the SIP ALG can not process it which will lead to an FPC crash and restart. Continued receipt of these specific packets will lead to a sustained Denial of Service. This issue can only occur when both below mentioned conditions are fulfilled: 1. Call distribution needs to be enabled: [security alg sip enable-call-distribution] 2. The SIP ALG needs to be enabled, either implicitly / by default or by way of configuration. To confirm whether SIP ALG is enabled on SRX, and MX with SPC3 use the following command: user@host> show security alg status | match sip SIP : Enabled This issue affects Juniper Networks Junos OS on SRX 5000 Series: 20.4 versions prior to 20.4R3-S5; 21.1 versions prior to 21.1R3-S4; 21.2 versions prior to 21.2R3-S3; 21.3 versions prior to 21.3R3-S3; 21.4 versions prior to 21.4R3-S2; 22.1 versions prior to 22.1R2-S2, 22.1R3; 22.2 versions prior to 22.2R3; 22.3 versions prior to 22.3R1-S1, 22.3R2. This issue does not affect Juniper Networks Junos OS versions prior to 20.4R1.
Credit: sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Junos OS Evolved | =20.4 | |
| Junos OS Evolved | =20.4-r1 | |
| Junos OS Evolved | =20.4-r1-s1 | |
| Junos OS Evolved | =20.4-r2 | |
| Junos OS Evolved | =20.4-r2-s1 | |
| Junos OS Evolved | =20.4-r2-s2 | |
| Junos OS Evolved | =20.4-r3 | |
| Junos OS Evolved | =20.4-r3-s1 | |
| Junos OS Evolved | =20.4-r3-s2 | |
| Junos OS Evolved | =20.4-r3-s3 | |
| Junos OS Evolved | =20.4-r3-s4 | |
| Junos OS Evolved | =21.1 | |
| Junos OS Evolved | =21.1-r1 | |
| Junos OS Evolved | =21.1-r1-s1 | |
| Junos OS Evolved | =21.1-r2 | |
| Junos OS Evolved | =21.1-r2-s1 | |
| Junos OS Evolved | =21.1-r2-s2 | |
| Junos OS Evolved | =21.1-r3 | |
| Junos OS Evolved | =21.1-r3-s1 | |
| Junos OS Evolved | =21.1-r3-s2 | |
| Junos OS Evolved | =21.1-r3-s3 | |
| Junos OS Evolved | =21.2 | |
| Junos OS Evolved | =21.2-r1 | |
| Junos OS Evolved | =21.2-r1-s1 | |
| Junos OS Evolved | =21.2-r1-s2 | |
| Junos OS Evolved | =21.2-r2 | |
| Junos OS Evolved | =21.2-r2-s1 | |
| Junos OS Evolved | =21.2-r2-s2 | |
| Junos OS Evolved | =21.2-r3 | |
| Junos OS Evolved | =21.2-r3-s1 | |
| Junos OS Evolved | =21.2-r3-s2 | |
| Junos OS Evolved | =21.3 | |
| Junos OS Evolved | =21.3-r1 | |
| Junos OS Evolved | =21.3-r1-s1 | |
| Junos OS Evolved | =21.3-r1-s2 | |
| Junos OS Evolved | =21.3-r2 | |
| Junos OS Evolved | =21.3-r2-s1 | |
| Junos OS Evolved | =21.3-r2-s2 | |
| Junos OS Evolved | =21.3-r3 | |
| Junos OS Evolved | =21.3-r3-s1 | |
| Junos OS Evolved | =21.3-r3-s2 | |
| Junos OS Evolved | =21.4 | |
| Junos OS Evolved | =21.4-r1 | |
| Junos OS Evolved | =21.4-r1-s1 | |
| Junos OS Evolved | =21.4-r1-s2 | |
| Junos OS Evolved | =21.4-r2 | |
| Junos OS Evolved | =21.4-r2-s1 | |
| Junos OS Evolved | =21.4-r2-s2 | |
| Junos OS Evolved | =21.4-r3 | |
| Junos OS Evolved | =21.4-r3-s1 | |
| Junos OS Evolved | =22.1-r1 | |
| Junos OS Evolved | =22.1-r1-s1 | |
| Junos OS Evolved | =22.1-r1-s2 | |
| Junos OS Evolved | =22.1-r2 | |
| Junos OS Evolved | =22.2-r1 | |
| Junos OS Evolved | =22.2-r1-s1 | |
| Junos OS Evolved | =22.2-r1-s2 | |
| Junos OS Evolved | =22.2-r2 | |
| Junos OS Evolved | =22.2-r2-s1 | |
| Junos OS Evolved | =22.3-r1 | |
| Juniper SRX5400 | ||
| Juniper SRX5600 | ||
| Juniper SRX5800 |
Remedy
The following software releases have been updated to resolve this specific issue: 20.4R3-S5, 21.1R3-S4, 21.2R3-S3, 21.3R3-S3, 21.4R3-S2, 22.1R2-S2, 22.1R3, 22.2R3, 22.3R1-S1, 22.3R2, 22.4R1, and all subsequent releases.
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2023-22408?
CVE-2023-22408 has a severity rating that is classified as a Denial of Service vulnerability.
How do I fix CVE-2023-22408?
To fix CVE-2023-22408, you should update Junos OS to a version that is not affected by this vulnerability.
What are the affected versions for CVE-2023-22408?
CVE-2023-22408 affects Junos OS versions 20.4 and 21.1 through 21.4, among others.
Can CVE-2023-22408 be exploited remotely?
Yes, CVE-2023-22408 can be exploited by a network-based, unauthenticated attacker.
What kind of impact does CVE-2023-22408 have on the system?
CVE-2023-22408 can lead to a Denial of Service, causing the affected system to become unavailable.
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