CVE-2010-5105

The undo save quit routine in the kernel in Blender 2.5, 2.63a, and earlier allows local users to overwrite arbitrary files via a symlink attack on the quit.blend temporary file. NOTE: this issue might be a regression of CVE-2008-1103.

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

Name	Vendor	Start Version	End Version
Blender	Blender	*	2.63a (including)
Blender	Ubuntu	artful	*
Blender	Ubuntu	bionic	*
Blender	Ubuntu	cosmic	*
Blender	Ubuntu	disco	*
Blender	Ubuntu	eoan	*
Blender	Ubuntu	focal	*
Blender	Ubuntu	groovy	*
Blender	Ubuntu	hardy	*
Blender	Ubuntu	hirsute	*
Blender	Ubuntu	impish	*
Blender	Ubuntu	kinetic	*
Blender	Ubuntu	lunar	*
Blender	Ubuntu	mantic	*
Blender	Ubuntu	oneiric	*
Blender	Ubuntu	oracular	*
Blender	Ubuntu	plucky	*
Blender	Ubuntu	precise	*
Blender	Ubuntu	quantal	*
Blender	Ubuntu	raring	*
Blender	Ubuntu	saucy	*
Blender	Ubuntu	trusty	*
Blender	Ubuntu	utopic	*
Blender	Ubuntu	vivid	*
Blender	Ubuntu	wily	*
Blender	Ubuntu	xenial	*
Blender	Ubuntu	yakkety	*
Blender	Ubuntu	zesty	*

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.

NVD	https://nvd.nist.gov/vuln/detail/CVE-2010-5105
CWE	https://cwe.mitre.org/data/definitions/59.html

Improper Link Resolution Before File Access ('Link Following')

Weakness

Affected Software

Potential Mitigations

References

CVE-2010-5105

Improper Link Resolution Before File Access ('Link Following')

Weakness

Affected Software

Potential Mitigations

Related Attack Patterns

References