Artifex GSView 6.0 Beta on Windows PDF File memory corruption

Summaryinfo

A vulnerability described as critical has been identified in Artifex GSView 6.0 Beta on Windows. This vulnerability affects unknown code of the component PDF File Handler. Executing a manipulation can lead to memory corruption. This vulnerability appears as CVE-2017-14946. The attack requires local access. There is no available exploit.

Detailsinfo

A vulnerability classified as critical was found in Artifex GSView 6.0 Beta on Windows. This vulnerability affects an unknown code block of the component PDF File Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Artifex GSView 6.0 Beta on Windows allows attackers to cause a denial of service or possibly have unspecified other impact via a crafted .pdf file, related to "Data from Faulting Address controls Branch Selection starting at mupdfnet64!mIncrementalSaveFile+0x000000000000344e."

The bug was discovered 09/14/2017. The weakness was presented 09/30/2017 (Website). The advisory is shared for download at bugs.ghostscript.com. This vulnerability was named CVE-2017-14946 since 09/29/2017. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 15 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

See VDB-107309 and VDB-107307 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• Artifex

Name

• GSView

Version

• 6.0 Beta

License

• commercial

Website

• Vendor: https://artifex.com/

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Once again VulDB remains the best source for vulnerability data.

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