CVE-2023-22416

HIGH

Juniper Networks Junos OS <20.4R3-S5, <21.1R3-S4, <21.2R3-S2, <21.3...

Title source: llm
STIX 2.1

Description

A Buffer Overflow vulnerability in SIP ALG of Juniper Networks Junos OS allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS). On all MX Series and SRX Series platform with SIP ALG enabled, when a malformed SIP packet is received, the flow processing daemon (flowd) will crash and restart. This issue affects: Juniper Networks Junos OS on MX Series and SRX Series 20.4 versions prior to 20.4R3-S5; 21.1 versions prior to 21.1R3-S4; 21.2 versions prior to 21.2R3-S2; 21.3 versions prior to 21.3R3-S1; 21.4 versions prior to 21.4R3; 22.1 versions prior to 22.1R1-S2, 22.1R2; 22.2 versions prior to 22.2R1-S1, 22.2R2. This issue does not affect Juniper Networks Junos OS versions prior to 20.4R1 on SRX Series.

References (1)

Core 1
Core References

Scores

CVSS v3 7.5
EPSS 0.0047
EPSS Percentile 64.8%
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 no
Technical Impact partial

Details

CWE
CWE-120
Status published
Products (8)
juniper/junos 20.4 (11 CPE variants)
juniper/junos 21.1 (10 CPE variants)
juniper/junos 21.2 (9 CPE variants)
juniper/junos 21.3 (8 CPE variants)
juniper/junos 21.4 (7 CPE variants)
juniper/junos 22.1 r1 (2 CPE variants)
juniper/junos 22.2 r1
juniper/junos < 20.4
Published Jan 13, 2023
Tracked Since Feb 18, 2026