Bug 1953004 (CVE-2020-23922) - CVE-2020-23922 giflib: out-of-bounds read in DumpScreen2RGB() in gif2rgb.c in gif2rgb tool
Summary: CVE-2020-23922 giflib: out-of-bounds read in DumpScreen2RGB() in gif2rgb.c in...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2020-23922
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1955576
Blocks: 1953005
TreeView+ depends on / blocked
 
Reported: 2021-04-23 17:42 UTC by Guilherme de Almeida Suckevicz
Modified: 2022-09-19 17:59 UTC (History)
5 users (show)

Fixed In Version:
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A flaw was found in giflib. A missing check in function DumpScreen2RGB in gif2rgb.c leads to an out-of-bounds read, allowing an attacker to crash the gif2rgb tool. The issue is not in the giflib library, but in the gif2rgb utility program.
Clone Of:
Environment:
Last Closed: 2021-10-28 12:23:28 UTC
Embargoed:

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Description Guilherme de Almeida Suckevicz 2021-04-23 17:42:26 UTC 
An issue was discovered in giflib through 5.1.4. DumpScreen2RGB in gif2rgb.c has a heap-based buffer over-read.

Reference:
https://sourceforge.net/p/giflib/bugs/151/
Comment 1 Riccardo Schirone 2021-04-30 12:17:50 UTC 
Statement:

This issue did not affect the versions of giflib as shipped with Red Hat Enterprise Linux 8 as they did not include the gif2rgb tool.
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