External risk intelligence

Adobe Flash Player Code Execution Vulnerability.

CVE advisoryKnown Exploit

CVE-2016-4171

A vulnerability in Adobe Flash Player allows remote attackers to execute arbitrary code. This poses a risk of system compromise and data theft for affected organizations and employees. The business risk includes unauthorized access and operational disruption.

1Halo Surface Signal

Adobe Flash Player

11.2.202.621 and earlier21.0.0.242 and earlier18.0.0.352 and earlier5.06.013.113.212

External exposure likelihood

Halo Surface Signal score for CVE-2016-4171

Adobe Flash Player is a client-side browser plugin that runs within the user's web browser environment to render content. It is not an internet-facing server, gateway, or edge service. Exposure is dependent on a user navigating to malicious content within a browser, rather than the product providing a reachable network service.

Horizon Alert

Summary of the vulnerability and why it matters

Adobe Flash Player contains a vulnerability that allows remote attackers to execute arbitrary code. This flaw could enable attackers to compromise systems and potentially steal sensitive data. The business impact may include unauthorized access to systems and disruption of operations.

  • Vulnerable component: Adobe Flash Player
  • Core weakness: Unspecified vulnerability
  • Main business impact: Arbitrary code execution

Attack Path

How an attacker could exploit the issue

A vulnerability in Adobe Flash Player allowed attackers to execute arbitrary code. This was exploited in the wild. The attack vector was unknown, but it led to remote code execution.

  • Unspecified vulnerability in Flash Player.
  • Remote attackers execute arbitrary code.
  • Exploited in the wild.

Live Threat

Current exploitation, exposure, and threat context

An unspecified vulnerability in Adobe Flash Player allowed for the execution of arbitrary code. This vulnerability was exploited in the wild in June 2016. The widespread use of Adobe Flash Player across various operating systems and browsers meant that many organizations and their employees could have been affected. The nature of the vulnerability suggests a significant risk of compromise.

  • Attackers with low skill can exploit.
  • No access or conditions required.
  • High business risk and urgency.

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability in Adobe Flash Player could allow an attacker to execute arbitrary code, potentially leading to compromised systems and data. Organizations should take immediate steps to address this risk.

  • Find affected assets.
  • Reduce exposure or isolate risk.
  • Apply vendor fix, verify, and monitor.

Frequently asked questions

What is Adobe Flash Player and its role in web content?

Adobe Flash Player was a multimedia software platform essential for delivering rich internet applications, animations, and interactive web content, including online games and video playback. It enabled the rendering of SWF files, a common format for dynamic web experiences before its obsolescence.

What type of vulnerability does CVE-2016-4171 represent?

CVE-2016-4171 is an unspecified vulnerability within Adobe Flash Player versions prior to 21.0.0.242. This flaw permits remote attackers to execute arbitrary code on a vulnerable system, representing a critical security risk.

How could CVE-2016-4171 be triggered by attackers?

The exact mechanism for triggering CVE-2016-4171 is unspecified. However, the vulnerability allows for remote code execution, meaning an attacker could potentially exploit it without needing any prior access or specific conditions on the target system, simply by presenting malicious content.

Why is CVE-2016-4171 particularly relevant to security concerns?

This vulnerability was actively exploited in the wild in June 2016, indicating a real-world threat. Its presence in Adobe Flash Player, a widely used browser plugin at the time, meant a broad range of users and organizations were potentially exposed to compromise, including theft of sensitive data.

What is the recommended response to the Adobe Flash Player vulnerability?

Given that Adobe Flash Player is end-of-life and has known security risks, the primary recommendation is to uninstall it. If uninstallation is not immediately possible, isolate affected systems and restrict its use to minimize exposure to potential threats.

References

Cyber Threat Intelligence (CTI)

Sources: threatActor