SB2023112135 - Multiple vulnerabilities in Nextcloud Server and Enterprise Server

Description

This security bulletin contains information about 2 vulnerabilities.

1) Improper access control (CVE-ID: CVE-2023-48303)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions. A remote administrator can change authentication details of user configured external storage.

2) Cleartext storage of sensitive information (CVE-ID: CVE-2023-48305)

CWE-ID: CWE-312 - Cleartext Storage of Sensitive Information

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to the log level is set to debug the user_ldap app logged user passwords in plaintext into the log file. A local administrator can gain access to sensitive information.

Remediation

Install update from vendor's website.

References

• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-2448-44rp-c7hh
• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-35p6-4992-w5fr