It was found that the forceput operator could be extracted...

Vulnerability Description

It was found that the forceput operator could be extracted from the DefineResource method in ghostscript before 9.27. A specially crafted PostScript file could use this flaw in order to, for example, have access to the file system outside of the constrains imposed by -dSAFER.

References

• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3838
• https://bugs.ghostscript.com/show_bug.cgi?id=700576
• https://access.redhat.com/errata/RHSA-2019:0652
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVERLGEU3OV6RNZ2SIBXREWD3BF5H23N/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ANBSCZABXQUEQWIKNWJ35IYX24M227EI/
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00011.html
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00018.html
• https://seclists.org/bugtraq/2019/Apr/4
• http://packetstormsecurity.com/files/152367/Slackware-Security-Advisory-ghostscript-Updates.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A43SRQAEHQCKSEMIBINHUNIGHTDCZD7F/
• https://www.debian.org/security/2019/dsa-4432
• https://seclists.org/bugtraq/2019/Apr/28
• https://lists.debian.org/debian-lts-announce/2019/04/msg00021.html
• https://access.redhat.com/errata/RHSA-2019:0971
• https://security.gentoo.org/glsa/202004-03