CVE-2019-13382

UploaderService in SnagIT 2019.1.2 allows elevation of privilege by placing an invalid presentation file in %PROGRAMDATA%TechSmithTechSmith RecorderQueuedPresentations and then creating a symbolic link in %PROGRAMDATA%TechsmithTechSmith RecorderInvalidPresentations that points to an arbitrary folder with an arbitrary file name. TechSmith Relay Classic Recorder prior to 5.2.1 on Windows is vulnerable. The vulnerability was introduced in SnagIT Windows 12.4.1.

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://posts.specterops.io/cve-2019-13382-local-privilege-escalation-in-snagit-abe5f31c349
• https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0010
• https://support.techsmith.com/hc/en-us/articles/115006435067-Snagit-Windows-Version-History