description: A format string vulnerability in Zyxel ATP series firmware versions from 4.32 through 5.37 Patch 1, USG FLEX series firmware versions from 4.50 through 5.37 Patch 1, USG FLEX 50(W) series firmware versions from 4.16 through 5.37 Patch 1, USG20(W)-VPN series firmware versions from 4.16 through 5.37 Patch 1, and USG FLEX H series firmware versions from 1.10 through 1.10 Patch 1 could allow an authenticated IPSec VPN user to cause DoS conditions against the “deviceid” daemon by sending a crafted hostname to an affected device if it has the “Device Insight” feature enabled.
problem types: CWE-134 Use of Externally-Controlled Format String
affected:
{
defaultStatus: unaffected
product: ATP series firmware
vendor: Zyxel
versions:
status: affected, version: version 4.32 through 5.37 Patch 1
}
{
defaultStatus: unaffected
product: USG FLEX series firmware
vendor: Zyxel
versions:
status: affected, version: version 4.50 through 5.37 Patch 1
}
{
defaultStatus: unaffected
product:  USG FLEX 50(W) series firmware
vendor: Zyxel
versions:
status: affected, version: version 4.16 through 5.37 Patch 1
}
{
defaultStatus: unaffected
product: USG20(W)-VPN series firmware
vendor: Zyxel
versions:
status: affected, version: version 4.16 through 5.37 Patch 1
}
{
defaultStatus: unaffected
product: USG FLEX H series firmware
vendor: Zyxel
versions:
status: affected, version: version 1.10 through 1.10 Patch 1
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: ADJACENT_NETWORK
availabilityImpact: HIGH
baseScore: 5.7
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
version: 3.1
]
format: CVSS
scenarios: GENERAL