SB2021120215 - Symbolic link following in IBM Tivoli Business Service Manager

Description

This security bulletin contains information about 1 vulnerability.

1) UNIX symbolic link following (CVE-ID: CVE-2013-0248)

CWE-ID: CWE-61 - UNIX Symbolic Link (Symlink) Following

CVSSv4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]

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

The vulnerability exists due to a symlink following issue. The application uses the /tmp directory for uploaded files. A local user can create a specially crafted symbolic link to a critical file on the system and overwrite it with privileges of the application.

Successful exploitation of this vulnerability may result in privilege escalation.

Remediation

Install update from vendor's website.

References

• https://www.ibm.com/blogs/psirt/security-bulletin-apache-commons-fileupload-vulnerability-affects-ibm-tivoli-business-service-manager-cve-2013-0248/
• https://www.ibm.com/support/pages/node/6520708