PT-2023-7250 · Zyxel · Zyxel Usg Flex Series+4

Alessandro Sgreccia

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Published

2023-10-19

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Updated

2023-12-04

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CVE-2023-5650

CVSS v3.1

5.5

Medium

VectorAV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Name of the Vulnerable Software and Affected Versions ZyXEL USG FLEX series firmware versions 4.50 through 5.37 ZyXEL USG FLEX 50(W) series firmware versions 4.16 through 5.37 ZyXEL USG20(W)-VPN series firmware versions 4.16 through 5.37 ZyXEL VPN series firmware versions 4.30 through 5.37 ZyXEL ATP series firmware versions 4.32 through 5.37
Description The issue is related to improper privilege management in the ZySH of the affected devices, which could allow an authenticated local attacker to modify the URL of the registration page in the web GUI of an affected device.
Recommendations For ZyXEL USG FLEX series firmware versions 4.50 through 5.37, update to a version outside of this range to resolve the issue. For ZyXEL USG FLEX 50(W) series firmware versions 4.16 through 5.37, update to a version outside of this range to resolve the issue. For ZyXEL USG20(W)-VPN series firmware versions 4.16 through 5.37, update to a version outside of this range to resolve the issue. For ZyXEL VPN series firmware versions 4.30 through 5.37, update to a version outside of this range to resolve the issue. For ZyXEL ATP series firmware versions 4.32 through 5.37, update to a version outside of this range to resolve the issue.

Fix

Improper Privilege Management

Weakness Enumeration

CWE-269

Related Identifiers

BDU:2023-08278
CVE-2023-5650

Affected Products

Zyxel Atp Series
Zyxel Usg Flex 50(W) Series
Zyxel Usg Flex Series
Zyxel Usg20(W)-Vpn Series
Zyxel Vpn Series