Zyxel ATP Debug CLI Command privileges management

Summaryinfo

A vulnerability marked as critical has been reported in Zyxel ATP, USG FLEX, USG FLEX 50, USG20-VPN, VPN, NWA50AX, WAC500, WAX300H and WBE660S. Impacted is an unknown function of the component Debug CLI Command Handler. This manipulation causes privileges management. The identification of this vulnerability is CVE-2023-5797. The attack can only be executed locally. There is no exploit available.

Detailsinfo

A vulnerability was found in Zyxel ATP, USG FLEX, USG FLEX 50, USG20-VPN, VPN, NWA50AX, WAC500, WAX300H and WBE660S (Network Encryption Software). It has been declared as problematic. Affected by this vulnerability is an unknown code of the component Debug CLI Command Handler. The manipulation with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality. The summary by CVE is:

An improper privilege management vulnerability in the debug CLI command 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, VPN series firmware versions 4.30 through 5.37, NWA50AX firmware version 6.29(ABYW.2), WAC500 firmware version 6.65(ABVS.1), WAX300H firmware version 6.60(ACHF.1), and WBE660S firmware version 6.65(ACGG.1), could allow an authenticated local attacker to access the administrator’s logs on an affected device.

The weakness was shared 11/28/2023. The advisory is shared at zyxel.com. This vulnerability is known as CVE-2023-5797 since 10/26/2023. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/28/2023). MITRE ATT&CK project uses the attack technique T1068 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Network Encryption Software

Vendor

• Zyxel

Name

• ATP
• NWA50AX
• USG20-VPN
• USG FLEX
• USG FLEX 50
• VPN
• WAC500
• WAX300H
• WBE660S

License

• commercial

Website

• Vendor: https://www.zyxel.com/

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