#VU33603 Heap-based buffer overflow in Debian Linux - CVE-2016-6525

Vulnerability identifier: #VU33603

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2016-6525

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Debian Linux
Operating systems & Components / Operating system

Vendor: Debian

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in Heap-based buffer overflow in the pdf_load_mesh_params function in pdf/pdf-shade.c in MuPDF. A remote attacker can use a large decode array. to trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Debian Linux: 8.0

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External links
https://bugs.ghostscript.com/show_bug.cgi?id=696954
https://git.ghostscript.com/?p=mupdf.git;h=39b0f07dd960f34e7e6bf230ffc3d87c41ef0f2e
https://www.debian.org/security/2016/dsa-3655
https://www.openwall.com/lists/oss-security/2016/08/03/8
https://www.securityfocus.com/bid/92266
https://security.gentoo.org/glsa/201702-12

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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.