CVE-2015-3228

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.

GhostScript is vulnerable to an integer overflow when processing a crafted PostScript file using the ps2pdf command (CVE-2015-3228).

These are all security issues fixed in the ghostscript-9.20-2.1 package on the GA media of openSUSE Tumbleweed.

ghostscript was updated to fix one security issue and one bug.

The following vulnerability was fixed:

• CVE-2015-3228: Specially crafted ps files could have caused an out of bound read/write due to an integer overflow, causing a segfault in the application or having unspecified further impact.

Also a non security bug was fixed:

• fix a crash in mutex handling (bsc#963017)

This update for ghostscript-library fixes the following issues:

• Multiple security vulnerabilities have been discovered where ghostscript's '-dsafer' flag did not provide sufficient protection against unintended access to the file system. Thus, a machine that would process a specially crafted Postscript file would potentially leak sensitive information to an attacker. (CVE-2013-5653, CVE-2016-7977, bsc#1001951)

• Insufficient validation of the type of input in .initialize_dsc_parser used to allow remote code execution. (CVE-2016-7979, bsc#1001951)

• An integer overflow in the gs_heap_alloc_bytes function used to allow remote attackers to cause a denial of service (crash) via specially crafted Postscript files. (CVE-2015-3228, boo#939342)

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.

William Robinet and Stefan Cornelius discovered that Ghostscript did not correctly handle certain Postscript files. If a user or automated system were tricked into opening a specially crafted file, an attacker could cause a denial of service or possibly execute arbitrary code.