CVE-2019-14869

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CVE-2019-14869

Summary:

Details: A flaw was found in all versions of ghostscript 9.x before 9.50, where the `.charkeys` procedure, where it did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. An attacker could abuse this flaw by creating a specially crafted PostScript file that could escalate privileges within the Ghostscript and access files outside of restricted areas or execute commands.

References: https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commitdiff%3Bh=485904772c5f, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2Q4E3OTDAJRSUCOBTDQO7Y5UTE2FFMLF/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HC4REO73BEJOJAU7NHFHJECAUAYJUE3H/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IX55AEDERTDFEZAROKZW64MZRPLINEGI/, http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00049.html, http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00050.html, https://access.redhat.com/errata/RHSA-2020:0222, http://jvn.jp/en/jp/JVN52486659/index.html, https://bugs.ghostscript.com/show_bug.cgi?id=701841, https://seclists.org/bugtraq/2019/Nov/27, http://www.openwall.com/lists/oss-security/2019/11/15/1, https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14869