cybersecurity

There are 849 posts tagged cybersecurity (this is page 61 of 85).

Atlassian Releases Security Updates for Multiple Products

Atlassian released a security advisory to address a vulnerability (CVE-2023-22527) in out-of-date versions of Confluence Data Center and Server as well as its January 2024 security bulletin to address vulnerabilities in multiple products. A malicious cyber actor could exploit one of these vulnerabilities to take control of an affected system.

CISA encourages users and administrators to review the Atlassian Confluence Vulnerability advisory and Atlassian’s January 2024 Security Bulletin and apply the necessary updates.

AVEVA PI Server

View CSAF

1. EXECUTIVE SUMMARY

  • CVSS v3 7.5
  • ATTENTION: Exploitable remotely/low attack complexity
  • Vendor: AVEVA
  • Equipment: PI Server
  • Vulnerabilities: Improper Check or Handling of Exceptional Conditions, Missing Release of Resource after Effective Lifetime

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker to crash the product being accessed or throttle the memory leading to a partial denial-of-service condition.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of AVEVA PI Server, are affected:

  • PI Server: 2023
  • PI Server: 2018 SP3 P05 and prior

3.2 Vulnerability Overview

3.2.1 IMPROPER CHECK OR HANDLING OF EXCEPTIONAL CONDITIONS CWE-703

AVEVA PI Server versions 2023 and 2018 SP3 P05 and prior contain a vulnerability that could allow an unauthenticated user to remotely crash the PI Message Subsystem of a PI Server, resulting in a denial-of-service condition.

CVE-2023-34348 has been assigned to this vulnerability. A CVSS v3 base score of 7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

3.2.2 MISSING RELEASE OF RESOURCE AFTER EFFECTIVE LIFETIME CWE-772

AVEVA PI Server versions 2023 and 2018 SP3 P05 and prior contain a vulnerability that could allow an unauthenticated user to cause the PI Message Subsystem of a PI Server to consume available memory resulting in throttled processing of new PI Data Archive events and a partial denial-of-service condition.

CVE-2023-31274 has been assigned to this vulnerability. A CVSS v3 base score of 5.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).

3.3 BACKGROUND

  • CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
  • COUNTRIES/AREAS DEPLOYED: Worldwide
  • COMPANY HEADQUARTERS LOCATION: United Kingdom

3.4 RESEARCHER

AVEVA reported these vulnerabilities to CISA.

4. MITIGATIONS

All affected versions can be fixed by upgrading to AVEVA PI Server version 2023 Patch 1 or later. From OSI Soft Customer Portal, search for “PI Server” and select version “2023 Patch 1”.

For an alternative fix, AVEVA PI Server 2018 SP3 Patch 5 and prior can be fixed by deploying AVEVA PI Server version 2018 SP3 Patch 6 or later. From OSI Soft Customer Portal, search for “PI Server” and select version “2018 SP3 Patch 6”.

AVEVA recommends that organizations evaluate the impact of these vulnerabilities based on their operational environment, architecture, and product implementation. Users with the affected products should apply security updates as soon as possible.

AVEVA recommends the following defensive measures:

  • Set the PI Message Subsystem to auto restart.
  • Monitor the memory usage of the PI Message Subsystem.
  • Limit network access to port 5450 to trusted workstations and software
  • Confirm that only authorized users have access to write to the PI Server Message Log. This is done through configuration of the PIMSGSS entry within the Database Security plugin accessible through PI System Management Tools.

For more information on this vulnerability, including security updates, users should see security bulletin AVEVA-2024-001.

CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:

  • Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
  • Locate control system networks and remote devices behind firewalls and isolating them from business networks.
  • When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.

5. UPDATE HISTORY

  • January 18, 2024: Initial Publication

Incident Response Guide for the WWS Sector

Today, CISA, the Federal Bureau of Investigation (FBI), and the Environmental Protection Agency released a joint Incident Response Guide for the Water and Wastewater Systems (WWS) Sector. The guide includes contributions from over 25 WWS Sector organizations spanning private industry, nonprofit, and government entities. This coordination enabled CISA, FBI, and EPA to develop a guide with meaningful value to WWS Sector organizations.

Specifically, the guide provides information about the federal support available at each stage of the cyber incident response (IR) lifecycle and aims to enhance WWS Sector cybersecurity by:

  •     Establishing clear guidance for reporting cyber incidents;
  •     Connecting utilities with available cybersecurity resources, services, and no-cost trainings;
  •     Empowering utilities to build a strong cybersecurity baseline to improve cyber resilience and cyber hygiene; and
  •     Encouraging utilities to integrate into their local cyber communities.

CISA, FBI, and EPA urge all WWS Sector and critical infrastructure organizations to review this guidance and incorporate it into their organizational cyber incident response planning. Organizations can visit CISA.gov/water for additional sector tools, information, and resources.

 

CISA and FBI Release Known IOCs Associated with Androxgh0st Malware

Today, CISA and the Federal Bureau of Investigation (FBI) released a joint Cybersecurity Advisory (CSA), Known Indicators of Compromise Associated with Androxgh0st Malware, to disseminate known indicators of compromise (IOCs) and tactics, techniques, and procedures (TTPs) associated with threat actors deploying Androxgh0st malware.

Androxgh0st malware establishes a botnet for victim identification and exploitation in vulnerable networks, and targets files that contain confidential information, such as credentials, for various high profile applications. Threat actors deploying Androxgh0st malware have been observed exploiting specific vulnerabilities which could lead to remote code execution, including:

In response, CISA is adding these CVEs to its Known Exploited Vulnerabilities Catalog.

CISA and FBI encourage organizations to review and implement the mitigations found in the joint CSA to reduce the likelihood and impact of cybersecurity incidents caused by Androxgh0st malware. For more information, visit CISA’s Malware, Phishing, and Ransomware page.