Bug 1400894 (CVE-2016-9132)

Summary:	CVE-2016-9132 botan: Integer overflow in BER decoder
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	slawomir, thomas.moschny
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:	2017-04-11 09:10:22 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1400895, 1400896
Bug Blocks:

Description Andrej Nemec 2016-12-02 09:12:35 UTC

While decoding BER length fields, an integer overflow could occur. This could occur while parsing untrusted inputs such as X.509 certificates. The overflow does not seem to lead to any obviously exploitable condition, but exploitation cannot be positively ruled out. Only 32-bit platforms are likely affected; to cause an overflow on 64-bit the parsed data would have to be many gigabytes.

Upstream patch:

https://github.com/randombit/botan/commit/987ad747db6d0d7e36f840398f3cf02e2fbfd90f

Comment 1 Andrej Nemec 2016-12-02 09:13:04 UTC

Created botan tracking bugs for this issue:

Affects: fedora-all [bug 1400895]
Affects: epel-all [bug 1400896]