Vulnerability identifier: #VU82796

Vulnerability risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-35140

CWE-ID: CWE-269

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
GS1900-8
Hardware solutions / Routers & switches, VoIP, GSM, etc
GS1900-8HP
Hardware solutions / Routers & switches, VoIP, GSM, etc
GS1900-10HP
Hardware solutions / Routers & switches, VoIP, GSM, etc
GS1900-16
Hardware solutions / Routers & switches, VoIP, GSM, etc
GS1900-24
Hardware solutions / Routers & switches, VoIP, GSM, etc
GS1900-24E
Hardware solutions / Routers & switches, VoIP, GSM, etc
GS1900-24EP
Hardware solutions / Routers & switches, VoIP, GSM, etc
GS1900-24HPv2
Hardware solutions / Routers & switches, VoIP, GSM, etc
GS1900-48
Hardware solutions / Routers & switches, VoIP, GSM, etc
GS1900-48HPv2
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: ZyXEL Communications Corp.

Description

The vulnerability allows a local user to escalate privileges.

The vulnerability exists due to improper privilege management. A local user can escalate privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

GS1900-8: 2.70(AAHH.5)

GS1900-8HP: 2.70(AAHI.5)

GS1900-10HP: 2.70(AAZI.5)

GS1900-16: 2.70(AAHJ.5)

GS1900-24: 2.70(AAHL.5)

GS1900-24E: 2.70(AAHK.5)

GS1900-24EP: 2.70(ABTO.5)

GS1900-24HPv2: 2.70(ABTP.5)

GS1900-48: 2.70(AAHN.5)

GS1900-48HPv2: 2.70(ABTQ.5)

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

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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.