External risk intelligence

Adobe Flash Player Remote Code Execution Advisory.

CVE advisoryKnown Exploit

CVE-2011-0611

This vulnerability in Adobe Flash Player, Reader, and AIR allows attackers to execute arbitrary code or cause denial of service via crafted content. The risk to organizations includes potential system compromise and operational disruption.

2Halo Surface Signal

Denial of Service

Adobe Flash Player

before 10.2.154.2710.2.156.12 and earlier9.0 to before 9.4.410.0 to 10.0.1before 2.6.1914010.0 to before 10.0.39.0 to before 9.4before 10.0.648.20511.211.311.41011

External exposure likelihood

Halo Surface Signal score for CVE-2011-0611

The vulnerability affects client-side software (Flash Player, Reader, AIR) typically deployed on end-user workstations. While these applications process external content (like web pages or documents), they are not internet-facing services or gateways, and public network exposure is not a standard deployment pattern for these components.

Horizon Alert

Summary of the vulnerability and why it matters

The vulnerability affects Adobe Flash Player, Adobe Reader, and Adobe AIR. This flaw allows remote attackers to execute arbitrary code or cause a denial of service. The potential impact includes the compromise of systems and the disruption of business operations.

  • Vulnerable Adobe software
  • Flaw enables code execution
  • Business impact includes system compromise

Attack Path

How an attacker could exploit the issue

Attackers can leverage a flaw in Adobe Flash Player, Adobe Reader, and Adobe AIR to execute arbitrary code on affected systems. This vulnerability can be triggered by malicious Flash content embedded within documents or presented on web pages. Successful exploitation could allow an attacker to gain control of the user's system, potentially leading to data theft or further compromise.

  • Malicious content is accessible.
  • Attacker sends crafted content.
  • Code executes, impacting systems.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow attackers to execute arbitrary code or cause denial-of-service attacks through specially crafted Flash content. The issue was actively exploited in the wild, indicating a real-world threat. Organizations should treat this as a high-risk vulnerability due to the potential for compromise.

  • Likely attacker skill level: Moderate.
  • Required access or conditions: User interaction with malicious content.
  • Business risk or urgency: High, active exploitation.

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability may allow attackers to execute arbitrary code or cause denial of service through crafted content. Organizations should identify and mitigate the risk to affected systems.

  • Find affected assets.
  • Reduce exposure or isolate risk.
  • Fix, verify, and monitor.

Frequently asked questions

What is the primary impact of CVE-2011-0611 on Adobe Flash Player, Reader, and AIR, and what kind of threat does it pose?

CVE-2011-0611 allows remote attackers to execute arbitrary code or cause denial of service via crafted Flash content. This poses a significant threat, potentially leading to system compromise and disruption of business operations. The flaw enables code execution, making it a high-risk vulnerability due to active exploitation in the wild.

How can attackers exploit CVE-2011-0611, and what is the technical weakness involved?

Attackers can exploit this vulnerability by embedding malicious Flash content within documents or on web pages. The technical weakness involves object type confusion and ActionScript that adds custom functions to prototypes, allowing for the execution of arbitrary code on affected systems. The specific weakness class is CWE-843.

What is the trigger path for CVE-2011-0611, and does it involve any scope negation?

The trigger path for this vulnerability involves a user interacting with specially crafted Flash content. This content can be embedded in Microsoft Office documents or displayed on web pages. There is no explicit mention of scope negation in the provided details.

How relevant is CVE-2011-0611, considering it was exploited in the wild and affects widely used Adobe products?

This vulnerability is highly relevant due to its active exploitation in the wild in April 2011. It affects widely used client-side software such as Adobe Flash Player, Adobe Reader, and Adobe AIR, which process external content. The HIGH severity rating and CVSS score of 8.8 underscore its significance. The Halo Surface Signal indicates it is 'Unlikely' to be a direct internet-facing service vulnerability, but its exploitation in the wild makes it a pertinent threat.

What practical steps should organizations take to address the risks associated with CVE-2011-0611?

Organizations should first identify all affected assets running vulnerable versions of Adobe Flash Player, Reader, and AIR. The recommended operational fix involves reducing exposure to the risk, which may include isolating affected systems or removing the vulnerable software if it's no longer in use, as it is end-of-life. Verification of mitigation efforts and ongoing monitoring are also crucial.

References