Bug 699655 - missing type checking in setcolor
Summary: missing type checking in setcolor
Status: NOTIFIED FIXED
Alias: None
Product: Ghostscript
Classification: Unclassified
Component: Security (public) (show other bugs)
Version: unspecified
Hardware: PC Linux
: P2 critical
Assignee: Chris Liddell (chrisl)
QA Contact: gs-security
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2018-08-21 17:56 UTC by Tavis Ormandy
Modified: 2019-05-08 13:35 UTC (History)
2 users (show)

See Also:
Customer: 501,641
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Description Tavis Ormandy 2018-08-21 17:56:47 UTC
setcolor claims no operand checking is necessary in the comments, because it's hidden behind a pseudo-operator of the same name. That's true, but you can still call it indirectly via setpattern, so type checking is necessary. Repro:

$ gs -q -sDEVICE=ppmraw -dSAFER
GS><< /Whatever 16#414141414141 >> setpattern
Segmentation fault
Comment 1 Chris Liddell (chrisl) 2018-08-23 11:41:29 UTC
Fixed in:

http://git.ghostscript.com/?p=ghostpdl.git;a=commitdiff;h=b326a716