CVE-2020-13833

An issue was discovered on Samsung mobile devices with O(8.x), P(9.0), and Q(10.0) software. The system area allows arbitrary file overwrites via a symlink attack. The Samsung ID is SVE-2020-17183 (June 2020).

Weakness

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

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/132.html
• https://cwe.mitre.org/data/definitions/17.html
• https://cwe.mitre.org/data/definitions/35.html
• https://cwe.mitre.org/data/definitions/76.html

References

• https://security.samsungmobile.com/securityUpdate.smsb