MatrixSSL contains multiple vulnerabilities
Original Release date: 11 Oct 2016 | Last revised: 12 Oct 2016

Overview
MatrixSSL, version 3.8.5 and earlier, contains heap overflow, out-of-bounds read, and unallocated memory free operation vulnerabilities.

Description

CWE-122: Heap-based Buffer Overflow – CVE-2016-6890
The Subject Alt Name field of X.509 certificates is not properly parsed.

A specially crafted certificate may result in a heap-based buffer overflow and arbitrary code execution.CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer – CVE-2016-6891The ASN.1 Bit Field is not properly parsed.

A specially crafted certificate may lead to a denial of service condition due to an out of bounds read in memory.CWE-590: Free of Memory not on the Heap – CVE-2016-6892The x509FreeExtensions() function does not properly parse X.509 certificates.

A specially crafted certificate may cause a free operation on unallocated memory, resulting in a denial of service condition.The CVSS score below describes CVE-2016-6890.

For more information about these vulnerabilities, contact the vendor at support@matrixssl.com or refer to the vendor release notes and the researcher’s blog.

Impact

By causing a server to parse a specially crafted X.509 certificate, a remote, unauthenticated attacker may be able to create a denial of service condition or execute arbitrary code in the context of the SSL stack.

Solution

Apply an updateThe vendor has released version 3.8.6 to address these issues.

Developers of embedded devices using MatrixSSL should provide firmware updates implementing the fix. Users in general should update to the latest release.

Vendor Information (Learn More)
Vendor
Status
Date Notified
Date Updated
MatrixSSL
Affected
26 Aug 2016
11 Oct 2016
ACCESS
Unknown
11 Oct 2016
11 Oct 2016
Alcatel-Lucent
Unknown
11 Oct 2016
11 Oct 2016
Apple
Unknown
11 Oct 2016
11 Oct 2016
Arch Linux
Unknown
11 Oct 2016
11 Oct 2016
Arista Networks, Inc.
Unknown
11 Oct 2016
11 Oct 2016
Aruba Networks
Unknown
11 Oct 2016
11 Oct 2016
AT&T
Unknown
11 Oct 2016
11 Oct 2016
Avaya, Inc.
Unknown
11 Oct 2016
11 Oct 2016
Barracuda Networks
Unknown
11 Oct 2016
11 Oct 2016
Belkin, Inc.
Unknown
11 Oct 2016
11 Oct 2016
Blue Coat Systems
Unknown
11 Oct 2016
11 Oct 2016
Brocade Communication Systems
Unknown
11 Oct 2016
11 Oct 2016
CA Technologies
Unknown
11 Oct 2016
11 Oct 2016
CentOS
Unknown
11 Oct 2016
11 Oct 2016
If you are a vendor and your product is affected, let us know.View More »CVSS Metrics (Learn More)
Group
Score
Vector
Base
10.0
AV:N/AC:L/Au:N/C:C/I:C/A:C
Temporal
7.8
E:POC/RL:OF/RC:C
Environmental
5.9
CDP:ND/TD:M/CR:ND/IR:ND/AR:ND

References

Credit
Thanks to Craig Young of Tripwire for reporting these vulnerabilities.
This document was written by Joel Land.

Other Information

Feedback
If you have feedback, comments, or additional information about this vulnerability, please send us email.

Leave a Reply