Bug 1444098 (CVE-2017-7868)

Summary:	CVE-2017-7868 icu: Heap-buffer overflow in utext_moveIndex32 function
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED DUPLICATE	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	abhgupta, denis.arnaud_fedora, dmoppert, erack, erik-fedora, kseifried, mfabian, tiwillia, tuxator
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-04-28 06:49:43 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1444099, 1444100, 1444101
Bug Blocks:	1444102

Description Andrej Nemec 2017-04-20 14:45:25 UTC

International Components for Unicode (ICU) for C/C++ has an out-of-bounds write caused by a heap-based buffer overflow related to the utf8TextAccess function in common/utext.cpp and the utext_moveIndex32* function.

References:

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=437

Upstream patch:

http://bugs.icu-project.org/trac/changeset/39671

Comment 1 Andrej Nemec 2017-04-20 14:46:28 UTC

Created icu tracking bugs for this issue:

Affects: fedora-all [bug 1444101]


Created mingw-icu tracking bugs for this issue:

Affects: epel-7 [bug 1444100]
Affects: fedora-all [bug 1444099]

Comment 2 Doran Moppert 2017-04-28 06:48:20 UTC

This is the same vulnerability as CVE-2017-7867 (bug 1444097), though clusterfuzz identified it as different due to a slightly different stack trace when the crash occurred.  Both are addressed by the same patch upstream, which correctly accounts for legacy 6-byte utf8 sequences.

Comment 3 Doran Moppert 2017-04-28 06:49:43 UTC


*** This bug has been marked as a duplicate of bug 1444097 ***

Comment 4 Doran Moppert 2020-02-10 04:32:24 UTC

Statement:

This flaw was found to be a duplicate of CVE-2017-7867. Please see https://access.redhat.com/security/cve/CVE-2017-7867 for information about affected products and security errata.