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.
{ "availability": "No subscription required", "ubuntu_priority": "high", "binaries": [ { "binary_version": "9.26~dfsg+0-0ubuntu0.16.04.12", "binary_name": "ghostscript" }, { "binary_version": "9.26~dfsg+0-0ubuntu0.16.04.12", "binary_name": "ghostscript-dbg" }, { "binary_version": "9.26~dfsg+0-0ubuntu0.16.04.12", "binary_name": "ghostscript-dbgsym" }, { "binary_version": "9.26~dfsg+0-0ubuntu0.16.04.12", "binary_name": "ghostscript-doc" }, { "binary_version": "9.26~dfsg+0-0ubuntu0.16.04.12", "binary_name": "ghostscript-x" }, { "binary_version": "9.26~dfsg+0-0ubuntu0.16.04.12", "binary_name": "ghostscript-x-dbgsym" }, { "binary_version": "9.26~dfsg+0-0ubuntu0.16.04.12", "binary_name": "libgs-dev" }, { "binary_version": "9.26~dfsg+0-0ubuntu0.16.04.12", "binary_name": "libgs-dev-dbgsym" }, { "binary_version": "9.26~dfsg+0-0ubuntu0.16.04.12", "binary_name": "libgs9" }, { "binary_version": "9.26~dfsg+0-0ubuntu0.16.04.12", "binary_name": "libgs9-common" }, { "binary_version": "9.26~dfsg+0-0ubuntu0.16.04.12", "binary_name": "libgs9-dbgsym" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "high", "binaries": [ { "binary_version": "9.26~dfsg+0-0ubuntu0.18.04.12", "binary_name": "ghostscript" }, { "binary_version": "9.26~dfsg+0-0ubuntu0.18.04.12", "binary_name": "ghostscript-dbg" }, { "binary_version": "9.26~dfsg+0-0ubuntu0.18.04.12", "binary_name": "ghostscript-doc" }, { "binary_version": "9.26~dfsg+0-0ubuntu0.18.04.12", "binary_name": "ghostscript-x" }, { "binary_version": "9.26~dfsg+0-0ubuntu0.18.04.12", "binary_name": "libgs-dev" }, { "binary_version": "9.26~dfsg+0-0ubuntu0.18.04.12", "binary_name": "libgs9" }, { "binary_version": "9.26~dfsg+0-0ubuntu0.18.04.12", "binary_name": "libgs9-common" } ] }