Vulnerability identifier: #VU6704

Vulnerability risk: Medium

CVSSv3.1: 6.2 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7976

CWE-ID: CWE-190

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Artifex jbig2dec
Client/Desktop applications / Multimedia software

Vendor: Artifex Software, Inc.

Description
The vulnerability allows a remote attacker to obtain potentially sensitive information or cause DoS condition.

The weakness exists due to integer overflow in the jbig2_image_compose function in jbig2_image.c during operations on a crafted .jb2 file. A remote attacker can send a specially crafted .jb2 file, trigger out-of-bounds writes and access arbitrary files from process memory, cause the application to crash or possibly execute arbitrary code.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Artifex jbig2dec : 0.13

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External links
http://bugs.ghostscript.com/show_bug.cgi?id=697683

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.