External risk intelligence

Adobe Reader and Acrobat Code Execution Vulnerability.

CVE advisoryKnown Exploit

CVE-2013-0641

A buffer overflow in Adobe Reader and Acrobat allows remote attackers to execute arbitrary code via a crafted PDF. This impacts systems that process PDF files. The realistic business risk involves potential system compromise and data exposure if users open malicious documents.

1Halo Surface Signal

Buffer Overflow

Adobe Acrobat

9.0 to before 9.5.410.0 to before 10.1.611.0 to before 11.0.026.05.96.411.412.11011

External exposure likelihood

Halo Surface Signal score for CVE-2013-0641

The vulnerability affects Adobe Reader and Acrobat, which are client-side desktop applications. Exploitation requires a user to open a malicious, specially crafted PDF file locally. It is not an internet-facing service, API, or network gateway, making public network exposure of this attack surface effectively non-existent.

Horizon Alert

Summary of the vulnerability and why it matters

This vulnerability affects specific versions of Adobe Reader and Acrobat. The core issue involves a buffer overflow that can be triggered by a specially crafted PDF document. Successful exploitation could allow an attacker to execute arbitrary code, potentially impacting system integrity and confidentiality.

  • Vulnerable Adobe applications
  • Buffer overflow weakness
  • Arbitrary code execution

Attack Path

How an attacker could exploit the issue

This vulnerability allows for the execution of arbitrary code when a user opens a specially crafted PDF document. The attack begins with a vulnerable version of Adobe Reader or Acrobat. An attacker can then send a malicious PDF file to a target user. Opening this PDF triggers a buffer overflow, enabling the attacker to gain control of the affected system. This could lead to the compromise of sensitive data or the disruption of operations.

  • Exposure condition: User opens malicious PDF.
  • Attacker starting point: Remote.
  • Trigger and result: Buffer overflow, code execution.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability involves a buffer overflow in Adobe Reader and Acrobat that could allow a remote attacker to execute arbitrary code. The exploit was observed in the wild, indicating real-world threat activity. Organizations utilizing affected versions of Adobe Reader and Acrobat face potential risks to their systems and data if malicious PDF documents are opened by users.

  • Attackers with moderate skill.
  • Requires user to open a crafted PDF.
  • High business risk and urgency.

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability, identified by the CVE ID CVE-2013-0641, involves a buffer overflow in Adobe Reader and Acrobat. Exploitation could allow remote attackers to execute arbitrary code by tricking users into opening a crafted PDF document. The risk is associated with client-side applications requiring user interaction to be exploited.

  • Find affected Adobe Reader and Acrobat assets.
  • Restrict PDF handling and user access.
  • Apply vendor updates, verify, and monitor.

Frequently asked questions

What is CVE-2013-0641 and which Adobe products are impacted?

CVE-2013-0641 is a buffer overflow vulnerability found in Adobe Reader and Acrobat. Versions 9.x before 9.5.4, 10.x before 10.1.6, and 11.x before 11.0.02 are affected. This flaw can be exploited via a crafted PDF document.

How does the buffer overflow in CVE-2013-0641 enable code execution?

This vulnerability is classified as CWE-120 (Buffer Overflow). Attackers can craft a malicious PDF document. When opened by a user with an affected Adobe Reader or Acrobat version, this PDF can overflow a buffer, potentially allowing the attacker to execute arbitrary code on the user's system.

What is the attack vector for CVE-2013-0641?

The vulnerability requires a user to open a specially crafted PDF document. This means exploitation is not possible through direct network access without user interaction. The attack vector is local, triggered by the user opening a malicious file.

What is the relevance of CVE-2013-0641, considering Halo Surface Signal?

Halo classifies this CVE as 'internal' because it affects client-side desktop applications (Adobe Reader/Acrobat) and requires a user to open a malicious PDF. Exploitation does not involve internet-facing services, making public network exposure of the attack surface minimal.

What are the recommended actions for addressing CVE-2013-0641?

To mitigate this risk, organizations should identify all affected Adobe Reader and Acrobat assets. It's crucial to restrict how PDF files are handled and limit user access where possible. Applying vendor-provided updates and continuously monitoring systems are also key steps.

References