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.
References (1)
Scores
CVSS v3
7.5
EPSS
0.0045
EPSS Percentile
63.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-824
Status
published
Products (6)
juniper/junos
20.4 (10 CPE variants)
juniper/junos
21.1 (8 CPE variants)
juniper/junos
21.2 (9 CPE variants)
juniper/junos
21.3 (9 CPE variants)
juniper/junos
21.4 (3 CPE variants)
juniper/junos
22.1 r1
Published
Oct 18, 2022
Tracked Since
Feb 18, 2026