Bug 1184028 (CVE-2015-1182)

Summary:	CVE-2015-1182 polarssl: remote attack using crafted certificates
Product:	[Other] Security Response	Reporter:	Martin Prpič <mprpic>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	mads, ms
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-06-10 22:26:58 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:	1184029, 1184030
Bug Blocks:

Description Martin Prpič 2015-01-20 13:42:20 UTC

The following flaw was found in PolarSSL:

During the parsing of a ASN.1 sequence, a pointer in the linked list of asn1_sequence is not initialized by asn1_get_sequence_of(). In case an error occurs during parsing of the list, a situation is created where the uninitialized pointer is passed to polarssl_free().

This sequence can be triggered when a PolarSSL entity is parsing a certificate. So practically this means clients when receiving a certificate from the server or servers in case they are actively asking for a client certificate.

Depending on the attackers knowledge of the system under attack, this results at the lowest into a Denial of Service, and at the most a possible Remote Code Execution.

The patch for this issue is provided in the PolarSSL Security Advisory 2014-04 referenced below.

External References:

https://polarssl.org/tech-updates/security-advisories/polarssl-security-advisory-2014-04

Comment 1 Martin Prpič 2015-01-20 13:43:31 UTC

Created polarssl tracking bugs for this issue:

Affects: fedora-all [bug 1184029]
Affects: epel-all [bug 1184030]

Comment 2 Morten Stevens 2015-01-20 14:56:18 UTC

Fedora updates:
https://admin.fedoraproject.org/updates/polarssl-1.2.12-3.fc20
https://admin.fedoraproject.org/updates/polarssl-1.3.9-3.fc21

Fedora-EPEL updates:
https://admin.fedoraproject.org/updates/polarssl-1.3.2-4.el5
https://admin.fedoraproject.org/updates/polarssl-1.3.2-4.el6
https://admin.fedoraproject.org/updates/polarssl-1.3.9-3.el7

Comment 3 Fedora Update System 2015-01-30 04:31:43 UTC

polarssl-1.2.12-3.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 4 Fedora Update System 2015-01-30 04:41:17 UTC

polarssl-1.3.9-3.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 5 Fedora Update System 2015-02-08 19:22:05 UTC

polarssl-1.3.2-4.el5 has been pushed to the Fedora EPEL 5 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 6 Fedora Update System 2015-02-08 19:22:41 UTC

polarssl-1.3.9-3.el7 has been pushed to the Fedora EPEL 7 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 7 Fedora Update System 2015-02-08 19:23:52 UTC

polarssl-1.3.2-4.el6 has been pushed to the Fedora EPEL 6 stable repository.  If problems still persist, please make note of it in this bug report.