PT-2023-7099 · Zyxel · Zyxel Gs1900-24Ep

Alexey Morozkov · Published 2023-11-07 · Updated 2023-11-14 · CVE-2023-35140

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions Zyxel GS1900-24EP switch firmware version V2.70(ABTO.5)

Description The issue is related to improper privilege management in the firmware of the Zyxel GS1900-24EP switch. This could allow an authenticated local user with read-only access to modify system settings on a vulnerable device. An attacker could exploit this to change system settings on the device.

Recommendations For Zyxel GS1900-24EP switch firmware version V2.70(ABTO.5), consider restricting access to system settings until a patch is available. As a temporary workaround, limit the privileges of read-only users to prevent them from modifying system settings. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Privilege Management

Weakness Enumeration

CWE-269

Related Identifiers

BDU:2023-08126

CVE-2023-35140

Affected Products

Zyxel Gs1900-24Ep

References · 5

• https://zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-improper-privilege-management-vulnerability-in-gs1900-series-switches · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-35140 · Security Note
• https://osv.dev/vulnerability/CVE-2023-35140 · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-08126 · Security Note
• https://vuldb.com/?id.244607 · Note