OpenSSL Releases Security Update

by Scott Muniz | Nov 1, 2022 | Security, Technology

This article is contributed. See the original author and article here.

OpenSSL has released a security advisory to address two vulnerabilities, CVE-2022-3602 and CVE-2022-3786, affecting OpenSSL versions 3.0.0 through 3.0.6.

Both CVE-2022-3602 and CVE-2022-3786 can cause a denial of service. According to OpenSSL, a cyber threat actor leveraging CVE-2022-3786, “can craft a malicious email address to overflow four attacker-controlled bytes on the stack. This buffer overflow could result in a crash (causing a denial of service) or potentially remote code execution,” allowing them to take control of an affected system.

CISA encourages users and administrators to review the OpenSSL advisory, blog, OpenSSL 3.0.7 announcement, and upgrade to OpenSSL 3.0.7. For additional information on affected products, see the 2022 OpenSSL vulnerability – CVE-2022-3602 GitHub repository, jointly maintained by the Netherland’s National Cyber Security Centrum (NCSC-NL) and CISA.

CISA Upgrades to TLP 2.0

by Scott Muniz | Nov 1, 2022 | Security, Technology

This article is contributed. See the original author and article here.

Today, CISA officially upgraded to Traffic Light Protocol (TLP) 2.0, which facilitates greater information sharing and collaboration. CISA made this upgrade in accordance with the recommendation from the Forum of Incident Response and Security Teams to upgrade to TLP 2.0 by January 2023.

Key TLP 2.0 updates:

• TLP 2.0 changes TLP:WHITE to TLP:CLEAR.
• TLP 2.0 adds the designation TLP:AMBER+STRICT, which instructs the recipient to keep the information strictly within their organization only.

Note: CISA’s Automated Indicator Sharing (AIS) capability will not update from TLP 1.0 to TLP 2.0 until March 2023. This exception includes AIS’s use of the following open standards: the Structured Threat Information Expression (STIX™) for cyber threat indicators and defensive measures information and the Trusted Automated Exchange of Intelligence Information (TAXII™) for machine-to-machine communications.

CISA encourage all individuals and organizations in the cybersecurity community to adopt TLP 2.0. For more information, see CISA’s TLP webpage, www.cisa.gov/tlp and FIRST’s TLP webpage, https://www.first.org/tlp/.

CISA Releases One Industrial Control Systems Advisory

by Scott Muniz | Nov 1, 2022 | Security, Technology

This article is contributed. See the original author and article here.

CISA released one Industrial Control Systems (ICS) advisory on November 1, 2022. This advisory provides timely information about current security issues, vulnerabilities, and exploits surrounding ICS.

CISA encourages users and administrators to review the newly released ICS advisory for technical details and mitigations:

CISA Releases Guidance on Phishing-Resistant and Numbers Matching Multifactor Authentication 

by Scott Muniz | Oct 31, 2022 | Security, Technology

This article is contributed. See the original author and article here.

CISA has released two fact sheets to highlight threats against accounts and systems using certain forms of multifactor authentication (MFA). CISA strongly urges all organizations to implement phishing-resistant MFA to protect against phishing and other known cyber threats. If an organization using mobile push-notification-based MFA is unable to implement phishing-resistant MFA, CISA recommends using number matching to mitigate MFA fatigue. Although number matching is not as strong as phishing-resistant MFA, it is one of best interim mitigation for organizations who may not immediately be able to implement phishing-resistant MFA.  

CISA recommends users and organizations see CISA fact sheets Implementing Phishing-Resistant MFA and Implementing Number Matching in MFA Applications. Visit CISA.gov/MFA for more information on MFA, including an infographic of the hierarchy of MFA options.