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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Juniper Networks | Junos OS | 20.4 – < 20.4R3-S5, 21.1 – < 21.1R3-S4, 21.2 – < 21.2R3-S2, 21.3 – < 21.3R3-S1, 21.4 – < 21.4R3, 22.1 – < 22.1R1-S2, 22.1R2, 22.2 – < 22.2R1-S1, 22.2R2 | 20.4R3-S5 |
Advisories 1
- WID-SEC-2023-0079 Juniper JUNOS, SRX Series und MX Series: Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Jan 11, 2023