Permissions, Privileges, and Access Controls in ZyXEL Communications Corp. Hardware solutions

#VU76987 Permissions, Privileges, and Access Controls in ZyXEL Communications Corp. Hardware solutions

Published: 2023-06-06

Vulnerability identifier: #VU76987

Vulnerability risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-45853

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vendor: ZyXEL Communications Corp.

Description

The vulnerability allows a local administrator to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions, which leads to security restrictions bypass and privilege escalation.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

GS1900-8: 2.70(AAHH.3)

GS1900-8HP: 2.70(AAHI.3)

GS1900-10HP: 2.70(AAZI.3)

GS1900-16: 2.70(AAHJ.3)

GS1900-24: 2.70(AAHL.3

GS1900-24E: 2.70(AAHK.3)

GS1900-24EP: 2.70(ABTO.3)

GS1900-24HPv2: 2.70(ABTP.3)

GS1900-48: 2.70(AAHN.3)

GS1900-48HPv2: 2.70(ABTQ.3)

External links
http://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-privilege-escalation-vulnerability-in-gs1900-series-switches

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.

Latest bulletins with this vulnerability

Privilege escalation in Zyxel GS1900 series switches