Blender 3d Creation Suite 2.78c blend File modifier_mdef_compact_influences integer overflow

Summaryinfo

A vulnerability, which was classified as critical, has been found in Blender 3d Creation Suite 2.78c. The affected element is the function modifier_mdef_compact_influences of the component blend File Handler. This manipulation causes integer overflow. This vulnerability appears as CVE-2017-12101. The attack requires local access. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Blender 3d Creation Suite 2.78c (Image Processing Software) and classified as critical. Affected by this vulnerability is the function modifier_mdef_compact_influences of the component blend File Handler. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

An exploitable integer overflow exists in the 'modifier_mdef_compact_influences' functionality of the Blender open-source 3d creation suite v2.78c. A specially crafted .blend 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 open a .blend file in order to trigger this vulnerability.

The bug was discovered 01/11/2018. The weakness was presented 04/24/2018 (Website). The advisory is shared at debian.org. This vulnerability is known as CVE-2017-12101 since 07/31/2017. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is 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). See VDB-117007, VDB-117008, VDB-117009 and VDB-117011 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Image Processing Software

Vendor

• Blender

Name

• 3d Creation Suite

Version

• 2.78c

License

• open-source

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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