CVE-2020-8014

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.

Weakness

The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files.

Affected Software

Potential Mitigations

• Follow the principle of least privilege when assigning access rights to entities in a software system.
• Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/27.html

References

• https://bugzilla.suse.com/show_bug.cgi?id=1164131