Vulnerabilities > CVE-2020-8014 - UNIX Symbolic Link (Symlink) Following vulnerability in Opensuse Leap and Tumbleweed Kopano-Spamd
Attack vector
LOCAL Attack complexity
LOW Privileges required
NONE Confidentiality impact
COMPLETE Integrity impact
COMPLETE Availability impact
COMPLETE Summary
A UNIX Symbolic Link (Symlink) Following vulnerability in the packaging of kopano-spamd of openSUSE Leap 15.1, openSUSE Tumbleweed allowed local attackers with the privileges of the kopano user to escalate to root. This issue affects: openSUSE Leap 15.1 kopano-spamd versions prior to 10.0.5-lp151.4.1. openSUSE Tumbleweed kopano-spamd versions prior to 10.0.5-1.1.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| OS | 1 | |
| Application | 1 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Leveraging Race Conditions via Symbolic Links This attack leverages the use of symbolic links (Symlinks) in order to write to sensitive files. An attacker can create a Symlink link to a target file not otherwise accessible to her. When the privileged program tries to create a temporary file with the same name as the Symlink link, it will actually write to the target file pointed to by the attackers' Symlink link. If the attacker can insert malicious content in the temporary file she will be writing to the sensitive file by using the Symlink. The race occurs because the system checks if the temporary file exists, then creates the file. The attacker would typically create the Symlink during the interval between the check and the creation of the temporary file.