Zyxel USG/USG Flex/Zywall/ATP/VPN up to 4.64 Web-based Management Interface improper authentication

Summaryinfo

A vulnerability described as critical has been identified in Zyxel USG, USG Flex, Zywall, ATP and VPN up to 4.64. The impacted element is an unknown function of the component Web-based Management Interface. Executing a manipulation can lead to improper authentication. This vulnerability is registered as CVE-2021-35029. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in Zyxel USG, USG Flex, Zywall, ATP and VPN up to 4.64 (Firewall Software). It has been declared as critical. This vulnerability affects an unknown code block of the component Web-based Management Interface. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was published 07/02/2021. The advisory is available at zyxel.com. This vulnerability was named CVE-2021-35029. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 07/02/2021).

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

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Productinfo

Type

• Firewall Software

Vendor

• Zyxel

Name

• ATP
• USG
• USG Flex
• VPN
• Zywall

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4
• 4.5
• 4.6
• 4.7
• 4.8
• 4.9
• 4.10
• 4.11
• 4.12
• 4.13
• 4.14
• 4.15
• 4.16
• 4.17
• 4.18
• 4.19
• 4.20
• 4.21
• 4.22
• 4.23
• 4.24
• 4.25
• 4.26
• 4.27
• 4.28
• 4.29
• 4.30
• 4.31
• 4.32
• 4.33
• 4.34
• 4.35
• 4.36
• 4.37
• 4.38
• 4.39
• 4.40
• 4.41
• 4.42
• 4.43
• 4.44
• 4.45
• 4.46
• 4.47
• 4.48
• 4.49
• 4.50
• 4.51
• 4.52
• 4.53
• 4.54
• 4.55
• 4.56
• 4.57
• 4.58
• 4.59
• 4.60
• 4.61
• 4.62
• 4.63
• 4.64

License

• commercial

Website

• Vendor: https://www.zyxel.com/

CPE 2.3info

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