A vulnerability was found in Blender 3d Creation Suite 2.78c (Image Processing Software). It has been rated as critical. Affected by this issue is an unknown functionality of the component AVI Handler. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is confidentiality, integrity, and availability. CVE summarizes:

An exploitable integer overflow exists in the animation playing functionality of the Blender open-source 3d creation suite version 2.78c. A specially created '.avi' file can cause an integer overflow resulting in a buffer overflow which can allow for code execution under the context of the application. An attacker can convince a user to use the file as an asset in order to trigger this vulnerability.

The bug was discovered 01/11/2018. The weakness was disclosed 04/24/2018 (Website). The advisory is available at debian.org. This vulnerability is handled as CVE-2017-2906 since 12/01/2016. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

The vulnerability was handled as a non-public zero-day exploit for at least 103 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 111140 (Debian DSA-4248-1 : blender - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176431 (Debian Security Update for blender (DSA 4248-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (111140). The entries 117007, 117008, 117009 and 117011 are pretty similar.

Productinfo

Type

• Image Processing Software

Vendor

• Blender

Name

• 3d Creation Suite

Version

• 2.78c

License

• open-source

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CPE 2.2info

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