PT-2017-9048 · Matrixssl · Matrixssl

Published 2017-01-13 · Updated 2017-01-18 · CVE-2016-6886

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions MatrixSSL versions prior to 3.8.4

Description The issue allows remote attackers to cause a denial of service, resulting in an invalid memory read and crash. This can be achieved by providing a zero value or the key's modulus for the secret key during RSA key exchange.

Recommendations For versions prior to 3.8.4, update to version 3.8.4 or later to resolve the issue. As a temporary workaround, consider restricting RSA key exchange to prevent the use of zero values or the key's modulus for the secret key.

Fix

Weakness Enumeration

CWE-320

Related Identifiers

CVE-2016-6886

Affected Products

Matrixssl

References · 5

• https://osv.dev/vulnerability/CVE-2016-6886 · Vendor Advisory
• http://matrixssl.org/blog/releases/matrixssl_3_8_4 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2016-6886 · Security Note
• http://securityfocus.com/bid/92604 · Note
• https://blog.fuzzing-project.org/51-Fun-with-Bignums-Crashing-MatrixSSL-and-more.html · Note