#VU33785 Input validation error in Ghostscript - CVE-2015-3228

Vulnerability identifier: #VU33785

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2015-3228

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Ghostscript
Universal components / Libraries / Libraries used by multiple products

Vendor: Artifex Software, Inc.

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

Integer overflow in the gs_heap_alloc_bytes function in base/gsmalloc.c in Ghostscript 9.15 and earlier allows remote attackers to cause a denial of service (crash) via a crafted Postscript (ps) file, as demonstrated by using the ps2pdf command, which triggers an out-of-bounds read or write.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Ghostscript: 9.00 - 9.15

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External links
https://bugs.ghostscript.com/show_bug.cgi?id=696041
https://bugs.ghostscript.com/show_bug.cgi?id=696070
https://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=0c0b0859
https://openwall.com/lists/oss-security/2015/07/23/14
https://www.debian.org/security/2015/dsa-3326
https://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
https://www.securityfocus.com/bid/76017
https://www.securitytracker.com/id/1033149
https://www.ubuntu.com/usn/USN-2697-1
https://bugzilla.redhat.com/show_bug.cgi?id=1232805
https://security.gentoo.org/glsa/201612-33

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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.