Save a Tree – Print Less! What a Printing Service Vulnerability Means for the Community


Posted on by Petros Efstathopoulos

When a severe cybersecurity vulnerability is discovered, it may be cause for alert for IT administrators and CISOs, who race to patch their systems and assess any potential damage. Things can be a bit more stressful, however, when the existence of such a vulnerability is announced, but little or no details are disclosed. This doesn’t happen often, but it did take place in late September of 2024, when a severe unauthenticated Remote Code Execution (RCE) vulnerability in GNU/Linux systems was announced with very little detail or specifics attached to the announcement. Eventually, the details were disclosed, initially on a security mailing list and later publicly. The vulnerability was given a severity score (CVSS) of 9.9/10 and it involves CUPS. CUPS is a popular print server used (and often enabled by default) by many popular Unix-like operating systems, such as Linux, BSD, Solaris, and Chrome OS, as well as devices that run embedded versions of these OSes. As the situation unfolds, details have since become available, including sample exploits, potential mitigation steps, and some patches by Linux distribution vendors. The number of affected devices, however, is unclear but may be in the tens of thousands of Internet-facing hosts.

Beyond Software: Implications of a Security Vulnerability

Besides the direct implications of such a vulnerability, this story brings to mind the benefits of an active and thriving cybersecurity community. First and foremost, the discovery of this and other vulnerabilities is often driven by the community and gifted individuals within it. Furthermore, all subsequent conversations and mitigation planning often happens in one of several communities of experts that are best equipped to handle the issue in question. Supporting such communities and their work is essential for ensuring the security of systems and business continuity. In the context of the day-to-day experience of a cybersecurity professional, however, the fragmentation of the landscape of forums and sources of information may present a challenge as it can be difficult to stay on top of all the activity and incremental updates taking place in each community outlet.

Improving Visibility and Access to Cybersecurity Resources

This challenge presents an opportunity for RSAC: as the custodians of a large and activity community of cybersecurity professionals, we acknowledge the importance of providing the community with awareness, communication, and rapid-response tools that will help improve visibility, access to resources and experts, and response times. This is also an important responsibility of RSAC and other large communities, as we need to preserve and cultivate the safe and fertile space that hosts these activities.

Leveraging the Cybersecurity Community

Discovering new vulnerabilities is not the only reason why our cyber communities are important. A series of recent cybersecurity events have demonstrated two things. First, the ripple effects of a cybersecurity crisis affect almost all aspects of life – from governance to travel, and from hospitality to healthcare. Second, during those moments of crisis, it is important to be able to summon the community’s collective expertise in order to understand the challenge, inform and educate stakeholders, coordinate efforts, and find a resolution in a timely manner. Yet again, all such recent events have highlighted that we need to cherish, support, protect, and grow our communities and their mission. The importance of sharing information and supporting communities, as well as engaging in community events and providing essential tools, cannot be overstated. These efforts are vital for securing a brighter future for us all.

Contributors
Petros Efstathopoulos

Vice President, Research, RSAC

Mobile & IoT Security Hackers & Threats

exploit of vulnerability vulnerability assessment Internet of Things innovation

Blogs posted to the RSAConference.com website are intended for educational purposes only and do not replace independent professional judgment. Statements of fact and opinions expressed are those of the blog author individually and, unless expressly stated to the contrary, are not the opinion or position of RSA Conference™, or any other co-sponsors. RSA Conference does not endorse or approve, and assumes no responsibility for, the content, accuracy or completeness of the information presented in this blog.


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