Bug 1555155 – CVE-2018-7728 exempi: Heap-based buffer overflow in third-party/zuid/interfaces/MD5.cpp:MD5Update() allows for denial of service via crafted TIFF image

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Bug 1555155 - (CVE-2018-7728) CVE-2018-7728 exempi: Heap-based buffer overflow in third-party/zuid/interfaces/MD5.cpp:MD5Update() allows for denial of service via crafted TIFF image

Summary:	CVE-2018-7728 exempi: Heap-based buffer overflow in third-party/zuid/interfac...

Status:	CLOSED NOTABUG

Aliases:	CVE-2018-7728

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 1555157 1555169
Blocks:	1555158
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Reported:	2018-03-14 00:15 EDT by Sam Fowler
Modified:	2018-04-30 14:10 EDT (History)
CC List:	4 users (show)

See Also:
Fixed In Version:	exempi 2.4.5
Doc Type:	If docs needed, set a value
Doc Text:	An out-of-bounds read vulnerability has been discovered in Exempi in the way it handles Extensible Metadata Platform (XMP) data in TIFF images. An attacker could cause a denial of service by convincing a user to open a crafted TIFF image file.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2018-04-30 03:25:30 EDT
Type:	---
Regression:	---
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Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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Description Sam Fowler 2018-03-14 00:15:40 EDT

Exempi through version 2.4.4 is vulnerable to a heap-based buffer overflow in third-party/zuid/interfaces/MD5.cpp:MD5Update() caused by a mishandled case of zero length in XMPFiles/source/FileHandlers/TIFF_Handler.cpp. An attacker could exploit this to cause a denial of service via crafted TIFF image file.


Upstream Bug Report:

https://bugs.freedesktop.org/show_bug.cgi?id=105205


Upstream Patch:

https://cgit.freedesktop.org/exempi/commit/?id=e163667a06a9b656a047b0ec660b871f29a83c9f

Comment 1 Sam Fowler 2018-03-14 00:16:19 EDT

Created exempi tracking bugs for this issue:

Affects: fedora-all [bug 1555156]

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