#VU64054 Improper control of interaction frequency in ZyXEL Communications Corp. products - CVE-2022-0823

Vulnerability identifier: #VU64054

Vulnerability risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-0823

CWE-ID: CWE-799

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
GS1200-5
Hardware solutions / Routers & switches, VoIP, GSM, etc
GS1200-5HP
Hardware solutions / Routers & switches, VoIP, GSM, etc
GS1200-8HP
Hardware solutions / Routers & switches, VoIP, GSM, etc
GS1200-8
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: ZyXEL Communications Corp.

Description

The vulnerability allows a local attacker to compromise the target system.

The vulnerability exists due to improper control of interaction frequency. A local attacker can perform a timing side-channel attack and guess the password.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

GS1200-5: before 2.00(ABKM.2)

GS1200-5HP: before 2.00(ABKN.2)

GS1200-8HP: before 2.00(ABMF.2)

GS1200-8: before 2.00(ABME.2)

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External links
https://www.zyxel.com/support/Zyxel-security-advisory-for-password-guessing-vulnerability-of-GS1200-series-switches.shtml

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.