SB2017041916 - Multiple vulnerabilities in Ghostscript

Description

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds read (CVE-ID: CVE-2017-8908)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The mark_line_tr function in gxscanc.c in Artifex Ghostscript 9.21 allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted PostScript document.

2) Integer overflow (CVE-ID: CVE-2017-7948)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

Integer overflow in the mark_curve function in Artifex Ghostscript 9.21 allows remote attackers to cause a denial of service (out-of-bounds write and application crash) or possibly have unspecified other impact via a crafted PostScript document.

Remediation

Install update from vendor's website.

References

• http://www.securityfocus.com/bid/98427
• https://bugs.ghostscript.com/show_bug.cgi?id=697810
• http://git.ghostscript.com/?p=ghostpdl.git;h=8210a2864372723b49c526e2b102fdc00c9c4699
• https://bugs.ghostscript.com/show_bug.cgi?id=697762
• https://security.gentoo.org/glsa/201811-12