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Bug 617920 (CVE-2017-7275) - media-gfx/imagemagick: memory allocation denial of service in coders/pcx.c (CVE-2017-7275)
Summary: media-gfx/imagemagick: memory allocation denial of service in coders/pcx.c (...
Status: RESOLVED CANTFIX
Alias: CVE-2017-7275
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal minor (vote)
Assignee: Gentoo Security
URL: https://github.com/ImageMagick/ImageM...
Whiteboard: ~3 [noglsa cve]
Keywords:
Depends on:
Blocks:
 
Reported: 2017-05-09 04:39 UTC by GLSAMaker/CVETool Bot
Modified: 2017-09-17 21:34 UTC (History)
1 user (show)

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Package list:
Runtime testing required: ---

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Description GLSAMaker/CVETool Bot gentoo-dev 2017-05-09 04:39:46 UTC 
CVE-2017-7275 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-7275):
  The ReadPCXImage function in coders/pcx.c in ImageMagick 7.0.4.9 allows
  remote attackers to cause a denial of service (attempted large memory
  allocation and application crash) via a crafted file. NOTE: this
  vulnerability exists because of an incomplete fix for CVE-2016-8862 and
  CVE-2016-8866.
Comment 2 Thomas Deutschmann (RETIRED) gentoo-dev 2017-05-22 16:54:59 UTC 
Upstream is unable to reproduce.

Upstream tried further mitigation via commit d94d85622f120f82240921ae7a83a72afcb79ddf which is available since v6.9.6-6 (current stable version in Gentoo is 6.9.7.4).
Comment 3 Yury German Gentoo Infrastructure gentoo-dev 2017-09-05 05:02:19 UTC 
Issue pending closure on upstream. AJSAN issue. 

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You are getting an allocation error because the size of the colormap is ridiculous high. On our systems we can allocate this but it then fails at a later moment.
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