CVE-2024-45315

The Improper link resolution before file access (Link Following) vulnerability in SonicWall Connect Tunnel (version 12.4.3.271 and earlier of Windows client) allows users with standard privileges to create arbitrary folders and files, potentially leading to local Denial of Service (DoS) attack.

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.

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://psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0017