CVE-2012-0776 in Acrobat Reader
Summary
by MITRE
The installer in Adobe Reader 9.x before 9.5.1 and 10.x before 10.1.3 allows attackers to bypass intended access restrictions and execute arbitrary code via unspecified vectors.
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Analysis
by VulDB Data Team • 10/14/2018
The vulnerability identified as CVE-2012-0776 represents a critical security flaw in Adobe Reader's installation component that affects versions prior to 9.5.1 and 10.1.3. This issue resides within the installer module responsible for handling the software installation process and allows malicious actors to circumvent legitimate access controls that are typically enforced during software deployment. The vulnerability's severity stems from its ability to enable arbitrary code execution, which provides attackers with a potent attack vector for system compromise. The unspecified nature of the exact attack vectors suggests that the flaw may manifest through multiple exploitation techniques, making it particularly challenging to defend against comprehensively. The installer component serves as a critical entry point for software deployment and is often executed with elevated privileges, amplifying the potential impact of this vulnerability.
The technical implementation of this vulnerability likely involves improper validation of installation parameters or insufficient access control checks within the installer's code execution flow. Attackers can exploit this weakness to manipulate the installation process and inject malicious code that executes with the privileges of the installer itself. This typically occurs through manipulation of installation files, command-line parameters, or environmental conditions that the installer processes without adequate verification. The vulnerability may involve issues such as insecure temporary file handling, insufficient input sanitization, or flawed privilege escalation mechanisms. From a cybersecurity perspective, this flaw aligns with common attack patterns documented in the attack mitigation framework, where installer-based vulnerabilities provide attackers with persistent execution capabilities. The vulnerability demonstrates characteristics consistent with CWE-276, which addresses improper privileges, and may also relate to CWE-74, concerning injection flaws, depending on the specific exploitation technique used.
The operational impact of CVE-2012-0776 extends beyond simple code execution, as it provides attackers with a means to establish persistent access to compromised systems. Once successfully exploited, attackers can install backdoors, modify system configurations, or deploy additional malware components through the legitimate installation process. The installer environment typically operates with elevated privileges, making this vector particularly dangerous for privilege escalation attacks. Organizations running affected versions of Adobe Reader face significant risk, as the vulnerability can be exploited through various attack vectors including malicious installation files, compromised update mechanisms, or social engineering campaigns that trick users into executing malicious installer payloads. The impact is further amplified in enterprise environments where Adobe Reader is widely deployed, as a single compromised installation can potentially affect multiple systems. This vulnerability also demonstrates how installation components often receive less security scrutiny compared to core application functionality, creating potential attack surfaces that may be overlooked during security assessments.
Mitigation strategies for CVE-2012-0776 require immediate patching of affected Adobe Reader installations to versions 9.5.1 and 10.1.3 or later. Organizations should implement comprehensive patch management procedures to ensure all systems are updated promptly, as the vulnerability can be exploited remotely without user interaction in many scenarios. Network administrators should consider implementing additional controls such as application whitelisting to prevent unauthorized installation processes from executing, particularly in high-security environments. The vulnerability highlights the importance of maintaining current software versions and implementing layered security approaches that include monitoring for suspicious installation activities. Security teams should also conduct vulnerability assessments to identify any systems that may still be running vulnerable versions of Adobe Reader, as the installer-based nature of this vulnerability makes it particularly attractive to attackers seeking persistent access. From an ATT&CK framework perspective, this vulnerability maps to techniques involving installation package manipulation and privilege escalation, emphasizing the need for comprehensive endpoint protection and application control measures to prevent exploitation. Organizations should also consider implementing security awareness training to prevent social engineering attacks that might leverage this vulnerability, as user interaction may be required in certain exploitation scenarios.