CVE-2022-22236 Junos OS: SRX Series and MX Series: When specific valid SIP packets are received the PFE will crash
An unauthenticated attacker can cause a denial of service by sending specific SIP packets that crash the Packet Forwarding Engine.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-22236?
CVE-2022-22236 is a high-severity vulnerability in Juniper Junos, published on 18 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An Access of Uninitialized Pointer vulnerability in SIP Application Layer Gateway (ALG) of Juniper Networks Junos OS on SRX Series and MX Series allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS). When specific valid SIP packets are received the PFE will crash and restart. This issue affects Juniper Networks Junos OS on SRX Series and MX Series: 20.4 versions prior to 20.4R3-S4; 21.1 versions prior to 21.1R3-S2; 21.2 versions prior to 21.2R3-S2; 21.3 versions prior to 21.3R2-S2, 21.3R3; 21.4 versions prior to 21.4R1-S2, 21.4R2; 22.1 versions prior to 22.1R1-S1, 22.1R2. This issue does not affect Juniper Networks Junos OS versions prior to 20.4R1.
Weakness: CWE-824
Which versions are affected by CVE-2022-22236?
It affects 1 product.
Products include Juniper Junos.
How do I fix CVE-2022-22236?
No fix has been published for CVE-2022-22236 yet. Limit exposure of the affected software until one is available.
Is CVE-2022-22236 being exploited?
There is no known exploitation of CVE-2022-22236 in the wild and no public exploit code.
Other vulnerabilities in Juniper Junos
- CVE-2023-36845 Juniper Junos OS EX Series and SRX Series PHP External Variable Modification
- CVE-2020-1631 Juniper Junos OS Path Traversal
- CVE-2025-21590 Juniper Junos OS Improper Isolation or Compartmentalization
- CVE-2023-36851 Juniper Junos OS SRX Series Missing Authentication for Critical Function
- CVE-2023-36844 Juniper Junos OS EX Series PHP External Variable Modification
Sources
Also known as GHSA-xp87-wp3m-6ppw.