CVE-2023-4398: An integer overflow vulnerability in the source code of the QuickSec IPSec toolkit used in the VPN feature of the Zyxel ATP series firmware versions 4.32…

PriorityP345high7.5CVSS 3.1

AVNACLPRNUINSUCNINAH

EPSS

0.88%

58.8th percentile

An integer overflow vulnerability in the source code of the QuickSec IPSec toolkit used in the VPN feature of the Zyxel ATP series firmware versions 4.32 through 5.37, USG FLEX series firmware versions 4.50 through 5.37, USG FLEX 50(W) series firmware versions 4.16 through 5.37, USG20(W)-VPN series firmware versions 4.16 through 5.37, and VPN series firmware versions 4.30 through 5.37, could allow an unauthenticated attacker to cause denial-of-service (DoS) conditions on an affected device by sending a crafted IKE packet.

Affected

15 ranges

Vendor	Product	Version range	Fixed in
linux	linux_kernel	>= 4.19.0 < 5.4.243	5.4.243
linux	linux_kernel	>= 5.11.0 < 5.15.111	5.15.111
linux	linux_kernel	>= 5.16.0 < 6.1.28	6.1.28
linux	linux_kernel	>= 5.5.0 < 5.10.180	5.10.180
linux	linux_kernel	>= 6.2.0 < 6.2.15	6.2.15
linux	linux_kernel	>= 6.3.0 < 6.3.2	6.3.2
zyxel	atp_series_firmware	—	—
zyxel	usg20_vpn_series_firmware	—	—
zyxel	usg_flex_50_series_firmware	—	—
zyxel	usg_flex_series_firmware	—	—
zyxel	vpn_series_firmware	—	—
zyxel	zld	4.16 – 5.37	—
zyxel	zld	4.30 – 5.37	—
zyxel	zld	4.32 – 5.37	—
zyxel	zld	4.50 – 5.37	—

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