Bug 1555164 – CVE-2018-7731 exempi: NULL pointer dereference in XMPFiles/source/FormatSupport/WEBP_Support.cpp:WEBP::VP8XChunk allows for denial of service via crafted file

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Bug 1555164 - (CVE-2018-7731) CVE-2018-7731 exempi: NULL pointer dereference in XMPFiles/source/FormatSupport/WEBP_Support.cpp:WEBP::VP8XChunk allows for denial of service via crafted file

Summary:	CVE-2018-7731 exempi: NULL pointer dereference in XMPFiles/source/FormatSuppo...

Status:	CLOSED NOTABUG

Aliases:	CVE-2018-7731

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
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=low,public=20180222,reported=2...
Keywords:	Security

Depends On:	1555156 1555169
Blocks:	1555158
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Reported:	2018-03-14 00:49 EDT by Sam Fowler
Modified:	2018-04-27 09:10 EDT (History)
CC List:	3 users (show)

See Also:
Fixed In Version:	exempi 2.4.5
Doc Type:	If docs needed, set a value
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Story Points:	---
Clone Of:
Environment:
Last Closed:	2018-04-27 09:10:19 EDT
Type:	---
Regression:	---
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Documentation:	---
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Verified Versions:
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oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
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Description Sam Fowler 2018-03-14 00:49:57 EDT

Exempi through version 2.4.4 is vulnerable to a NULL pointer dereference in the XMPFiles/source/FormatSupport/WEBP_Support.cpp:WEBP::VP8XChunk class. An attacker could exploit this to cause a denial of service via crafted file.


Upstream Bug Report:

https://bugs.freedesktop.org/show_bug.cgi?id=105247


Upstream Patch:

https://cgit.freedesktop.org/exempi/commit/?id=aabedb5e749dd59112a3fe1e8e08f2d934f56666

Comment 2 Sam Fowler 2018-03-14 01:18:39 EDT

Created exempi tracking bugs for this issue:

Affects: fedora-all [bug 1555156]

Comment 4 Riccardo Schirone 2018-04-27 09:10:28 EDT

Statement:

This issue did not affect the versions of Exempi as shipped with Red Hat Enterprise Linux 6 and 7 as they did not include support for WebP file format.

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