CVE-2010-2602 in BlackBerry Enterprise Server
Summary
by MITRE
Multiple buffer overflows in the PDF distiller component in the BlackBerry Attachment Service in BlackBerry Enterprise Server 5.0.0 through 5.0.2, 4.1.6, and 4.1.7 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted PDF document.
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Analysis
by VulDB Data Team • 10/07/2021
The vulnerability identified as CVE-2010-2602 represents a critical security flaw within the BlackBerry Enterprise Server's PDF distiller component, specifically affecting versions 5.0.0 through 5.0.2 and 4.1.6 and 4.1.7. This issue resides within the BlackBerry Attachment Service, which serves as a crucial gateway for processing and handling email attachments within the enterprise messaging infrastructure. The vulnerability manifests as multiple buffer overflows that occur during the processing of PDF documents, creating a significant attack surface for malicious actors seeking to compromise the targeted systems.
The technical implementation of this vulnerability stems from inadequate input validation and memory management within the PDF distiller functionality. When the BlackBerry Attachment Service processes a specially crafted PDF document, the flawed buffer handling causes memory corruption that can result in unpredictable behavior. The buffer overflow conditions occur because the system fails to properly validate the size and structure of PDF elements before attempting to copy or process them into fixed-size memory buffers. This fundamental flaw aligns with CWE-121, which describes stack-based buffer overflow conditions, and CWE-122, which addresses heap-based buffer overflow scenarios. The vulnerability operates at the intersection of software security and memory corruption, making it particularly dangerous for enterprise environments where email systems serve as primary communication channels.
The operational impact of CVE-2010-2602 extends beyond simple denial of service conditions, presenting potential for arbitrary code execution within the affected systems. Remote attackers can exploit this vulnerability by sending malicious PDF attachments that trigger the buffer overflow conditions during processing, leading to system crashes and potential privilege escalation. The implications for enterprise security are severe as BlackBerry Enterprise Server deployments typically handle sensitive corporate communications, making this vulnerability particularly attractive to threat actors seeking unauthorized access to organizational networks. The vulnerability's presence in multiple versions of the BlackBerry Enterprise Server indicates a widespread exposure across affected deployments, increasing the potential attack surface significantly. Organizations utilizing these versions face substantial risk of system compromise, data interception, and disruption of critical communication services.
Mitigation strategies for CVE-2010-2602 require immediate attention from security administrators and system operators. The primary recommendation involves applying the vendor-supplied security patches and updates that address the buffer overflow conditions in the PDF distiller component. Organizations should also implement network-level controls to filter or block suspicious PDF attachments, particularly those that may contain malformed elements designed to trigger the vulnerability. The implementation of email security solutions that perform deep content inspection and sandboxing of attachments can provide additional protection layers. From a defensive perspective, this vulnerability demonstrates the importance of proper input validation and memory management practices as outlined in the OWASP Top Ten security risks. The ATT&CK framework categorizes this type of vulnerability under the 'Exploitation for Privilege Escalation' tactic, highlighting the potential for attackers to leverage such flaws to gain unauthorized system access and execute malicious code within the enterprise environment. Organizations should also consider implementing network segmentation to limit the potential impact of successful exploitation attempts and establish comprehensive incident response procedures to address potential compromise scenarios.