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gsview -dSAFER Not Used Vulnerability
gsview: -dSAFER not used I was planning to test the exploit for <a href="/p/project-zero/issues/detail?id=1640" title="ghostscript: multiple critical vulnerabilities, including remote command execution" class="closed_ref" rel="nofollow"> bug 1640 </a> against gsview, the official ghostscript viewer, but it turns out systemdict /SAFER get returns false. That means opening a file in gsview is equivalent to running arbitrary code, the obvious attack is doing something like: (C:/Users/foo/Start Menu/Startup/exploit.bat) (w) file dup (calc.exe) writestring closefile I don't think it's clear from the documentation that you cannot open untrusted files, and I can't find any configuration setting to enable the SAFER sandbox. This bug is subject to a 90 day disclosure deadline. After 90 days elapse or a patch has been made broadly available (whichever is earlier), the bug report will become visible to the public. # 0day.today [2024-11-14] #