CVE-2013-3553 in Nitro Pro
Summary
by MITRE
Nitro Pro 7.5.0.22 and earlier and Nitro Reader 2.5.0.36 and earlier allow remote attackers to execute arbitrary code via a crafted PDF file.
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Analysis
by VulDB Data Team • 01/03/2020
The vulnerability identified as CVE-2013-3553 represents a critical remote code execution flaw affecting Nitro Pro and Nitro Reader software versions up to 7.5.0.22 and 2.5.0.36 respectively. This vulnerability resides within the PDF processing functionality of these document viewers, creating a significant attack surface that adversaries can exploit to gain unauthorized system access. The flaw manifests when the affected applications process specially crafted PDF files, which can contain malicious code designed to leverage the application's parsing mechanisms.
The technical nature of this vulnerability stems from insufficient input validation and sanitization within the PDF rendering engine of Nitro's software suite. When a user opens or previews a maliciously crafted PDF file, the application's parser fails to properly validate the file structure and content, allowing attacker-controlled code to execute within the context of the application's privileges. This represents a classic buffer overflow or memory corruption vulnerability that has been exploited in similar PDF processing applications. The vulnerability aligns with CWE-119, which addresses improper restriction of operations within a limited error handling scope, and CWE-787, concerning out-of-bounds write operations. Attackers can leverage this flaw to execute arbitrary commands on the victim's system, potentially leading to complete system compromise.
From an operational perspective, this vulnerability poses severe risks to organizations that rely on Nitro's PDF viewing capabilities. The remote exploitation capability means that adversaries can deliver malicious payloads through email attachments, web downloads, or compromised websites without requiring user interaction beyond opening the document. The impact extends beyond individual users to enterprise environments where PDF files are frequently shared and opened across multiple systems. This vulnerability enables attackers to establish persistent access, escalate privileges, and potentially move laterally within networks. The attack pattern aligns with ATT&CK technique T1203, which covers exploitation for execution through the use of malicious documents, and T1059, covering command and scripting interpreter usage for execution. Organizations using these vulnerable versions face significant risk of data breaches, system compromise, and potential regulatory violations due to the lack of proper input validation in the PDF processing pipeline.
Mitigation strategies for CVE-2013-3553 should prioritize immediate software updates and patches from Nitro's vendor, as the vulnerability requires no user interaction to exploit. System administrators should implement network-based protections including web application firewalls and email filtering systems that can detect and block suspicious PDF files. Organizations should also consider implementing sandboxing mechanisms for PDF processing and restricting user permissions when opening potentially malicious documents. Additionally, security awareness training should emphasize the dangers of opening unexpected PDF attachments and the importance of verifying document sources. The vulnerability highlights the critical importance of maintaining up-to-date software versions and implementing defense-in-depth strategies that protect against various attack vectors. Regular vulnerability assessments and penetration testing should be conducted to identify similar flaws in other document processing applications within the organization's infrastructure.