Vulnerability identifier: #VU6702

Vulnerability risk: Low

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-7885

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_decode_symbol_dict function in jbig2_symbol_dict.c in libjbig2dec.a during operation on a crafted .jb2 file. A remote attacker can send a specially crafted .jb2 file, trigger heap-based buffer over-read and access arbitrary files from process memory or cause the application to crash.

Successful exploitation of the vulnerability may result in information disclosure or denial of service.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Artifex jbig2dec : 0.13

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External links
http://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=b184e783702246e15

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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.