Bug 1583400 – CVE-2018-11490 giflib: heap-based buffer overflow in DGifDecompressLine function in dgif_lib.c

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Bug 1583400 - (CVE-2018-11490) CVE-2018-11490 giflib: heap-based buffer overflow in DGifDecompressLine function in dgif_lib.c

Summary:	CVE-2018-11490 giflib: heap-based buffer overflow in DGifDecompressLine funct...

Status:	CLOSED NOTABUG

Aliases:	CVE-2018-11490

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	low Severity low
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
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Whiteboard:	impact=low,public=20180523,reported=2...
Keywords:	Security

Depends On:	1583404 1583405
Blocks:	1583408
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Reported:	2018-05-28 18:18 EDT by Laura Pardo
Modified:	2018-08-02 05:53 EDT (History)
CC List:	16 users (show)

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Last Closed:	2018-08-02 05:52:49 EDT
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Description Laura Pardo 2018-05-28 18:18:57 EDT

A flaw was found in the DGifDecompressLine function in dgif_lib.c in GIFLIB (possibly version 3.0.x), as later shipped in cgif.c in sam2p 0.49.4, has a heap-based buffer overflow because a certain "Private->RunningCode - 2" array index is not checked. This will lead to a denial of service or possibly unspecified other impact.


References:
https://github.com/pts/sam2p/issues/38

Comment 1 Laura Pardo 2018-05-28 18:19:47 EDT

Created giflib tracking bugs for this issue:

Affects: fedora-all [bug 1583404]

Comment 3 James Hebden 2018-06-05 01:36:07 EDT

phantomjs used in RHOSP7-optools bundles version 4.0 of giflib, which does not contain the vulnerable DGifDecompressLine function.

Comment 4 Sandro Mani 2018-06-15 16:57:18 EDT

Upstream ticket: https://sourceforge.net/p/giflib/bugs/113/

Comment 5 Stefan Cornelius 2018-08-02 05:53:02 EDT

Statement:

This issue did not affect the versions of giflib as shipped with Red Hat Enterprise Linux 5, 6, an 7.

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