Bug 2262734 (CVE-2020-36773) - CVE-2020-36773 Ghostscript: out-of-bounds write and use-after-free in devices/vector/gdevtxtw.c (for txtwrite)
Summary: CVE-2020-36773 Ghostscript: out-of-bounds write and use-after-free in devices...
Keywords:
Status: NEW
Alias: CVE-2020-36773
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
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Depends On:
Blocks: 2262738
TreeView+ depends on / blocked
 
Reported: 2024-02-05 07:04 UTC by Avinash Hanwate
Modified: 2024-03-21 13:37 UTC (History)
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An out-of-bounds write, and a use-after-free flaw was found in Ghostscript. The flaw is present in devices/vector/gdevtxtw.c, for txtwrite, due to a single character code in a PDF document that can map to more than one Unicode code point (for example, a ligature).
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Description Avinash Hanwate 2024-02-05 07:04:50 UTC 
Artifex Ghostscript before 9.53.0 has an out-of-bounds write and use-after-free in devices/vector/gdevtxtw.c (for txtwrite) because a single character code in a PDF document can map to more than one Unicode code point (e.g., for a ligature).

https://bugs.ghostscript.com/show_bug.cgi?id=702229
https://bugzilla.opensuse.org/show_bug.cgi?id=1177922
https://git.ghostscript.com/?p=ghostpdl.git%3Ba=commit%3Bh=8c7bd787defa071c96289b7da9397f673fddb874
https://github.com/ArtifexSoftware/ghostpdl-downloads/releases/tag/gs9530
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