As the BSI is currently reporting, a vulnerability has been identified for MatrixSSL. You can read a description of the vulnerability and a list of affected operating systems and products here.
The Federal Office for Security in der Informationstechnik (BSI) published a security advisory for MatrixSSL on July 11th, 2023. The operating systems UNIX, Linux and Windows as well as the product open source MatrixSSL are affected by the vulnerability.
The latest manufacturer recommendations regarding updates, workarounds and security patches for this vulnerability can be found here: Github Security Advisory GHSA-C68M-3MQH-4GWV (Stand: 10.07.2023).
Security Advice for MatrixSSL – Risk: medium
Risk level: 3 (medium)
CVSS Base Score: 7,5
CVSS Temporal Score: 6,5
Remoteangriff: Ja
The Common Vulnerability Scoring System (CVSS) is used to assess the vulnerability of computer systems. The CVSS standard makes it possible to compare potential or actual security vulnerabilities based on various criteria in order to better prioritize countermeasures. The attributes “none”, “low”, “medium”, “high” and “critical” are used for the severity of a vulnerability. The base score assesses the prerequisites for an attack (including authentication, complexity, privileges, user interaction) and its consequences. With the temporal score, framework conditions that change over time are included in the evaluation. According to the CVSS, the risk of the current vulnerability is rated as “medium” with a base score of 7.5.
MatrixSSL Bug: Vulnerability allows Denial of Service
MatrixSSL is an embedded SSL and TLS implementation designed for small footprint IoT devices.
A remote, anonymous attacker could exploit a vulnerability in MatrixSSL to perform a denial of service attack.
Systems affected by the MatrixSSL vulnerability at a glance
operating systems
UNIX, Linux, Windows
Products
Open Source MatrixSSL
General recommendations for dealing with IT vulnerabilities
Users of the affected systems should keep them up to date. When security gaps become known, manufacturers are required to remedy them as quickly as possible by developing a patch or a workaround. If security patches are available, install them as soon as possible. For information, consult the sources listed in the next section. These often contain further information on the latest version of the software in question and the availability of security patches or tips on workarounds. If you have any further questions or are unsure, contact your responsible administrator. IT security officers should regularly check when the IT security warning affected manufacturers makes a new security update available.
Sources for updates, patches and workarounds
At this point there are further links with information about bug reports, security fixes and workarounds.
Github Security Advisory GHSA-C68M-3MQH-4GWV vom 2023-07-10 (11.07.2023)
For more information, see:
Version history of this security alert
This is the initial version of this IT security notice for MatrixSSL. As updates are announced, this text will be updated. You can read about changes or additions in this version history.
07/11/2023 – Initial version
+++ Editorial note: This text was created with AI support based on current BSI data. We accept feedback and comments at [email protected]. +++
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