K30552262 : GhostScript vulnerabilities CVE-2013-5653, CVE-2016-7977, CVE-2016-7979, and CVE-2016-8602

Security Advisory Description

• CVE-2013-5653

The getenv and filenameforall functions in Ghostscript 9.10 ignore the "-dSAFER" argument, which allows remote attackers to read data via a crafted postscript file.

• CVE-2016-7977

Ghostscript before 9.21 might allow remote attackers to bypass the SAFER mode protection mechanism and consequently read arbitrary files via the use of the .libfile operator in a crafted postscript document.

• CVE-2016-7979

Ghostscript before 9.21 might allow remote attackers to bypass the SAFER mode protection mechanism and consequently execute arbitrary code by leveraging type confusion in .initialize_dsc_parser.

• CVE-2016-8602

The .sethalftone5 function in psi/zht2.c in Ghostscript before 9.21 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted Postscript document that calls .sethalftone5 with an empty operand stack.
Impact
There is no impact; F5 products are not affected by this vulnerability.