CVE-2009-1182 in CUPS
Summary
by MITRE
Multiple buffer overflows in the JBIG2 MMR decoder in Xpdf 3.02pl2 and earlier, CUPS 1.3.9 and earlier, Poppler before 0.10.6, and other products allow remote attackers to execute arbitrary code via a crafted PDF file.
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Analysis
by VulDB Data Team • 12/14/2024
The vulnerability identified as CVE-2009-1182 represents a critical buffer overflow condition affecting multiple PDF rendering libraries and applications. This flaw exists within the JBIG2 Modified Modified Read (MMR) decoder component, which is responsible for decompressing JBIG2 encoded images commonly embedded within PDF documents. The vulnerability affects widely deployed software including Xpdf version 3.02pl2 and earlier, CUPS version 1.3.9 and earlier, and Poppler versions prior to 0.10.6, making it a widespread concern across various operating systems and document processing environments. The flaw stems from insufficient input validation and improper memory management when processing specially crafted JBIG2 compressed data streams.
The technical implementation of this vulnerability involves the exploitation of unchecked buffer boundaries during the decompression process of JBIG2 image data. When a malicious PDF file contains crafted JBIG2 data, the decoder fails to properly verify the size of incoming data against allocated buffer space, leading to memory corruption that can be leveraged by attackers to overwrite adjacent memory locations. This memory corruption typically occurs when the decoder attempts to write more data into a buffer than it can accommodate, creating opportunities for stack or heap corruption that can be manipulated to execute arbitrary code. The vulnerability falls under CWE-121, which specifically addresses stack-based buffer overflow conditions, and may also relate to CWE-122 for heap-based buffer overflows depending on the specific implementation details of the affected software.
The operational impact of this vulnerability extends across multiple attack vectors and system environments where PDF processing occurs. Remote attackers can exploit this flaw by simply delivering a malicious PDF file to a victim's system, making it particularly dangerous in web browsing scenarios, email attachments, and document sharing environments. The execution of arbitrary code through this vulnerability allows attackers to potentially gain full system control, escalate privileges, or establish persistent access to compromised systems. This vulnerability directly aligns with ATT&CK technique T1203, which describes exploitation of software vulnerabilities for privilege escalation, and T1059, covering command and scripting interpreter usage for execution. The widespread adoption of affected software libraries means that numerous applications and operating systems could be vulnerable, creating a significant attack surface that spans across different computing environments.
Mitigation strategies for CVE-2009-1182 focus on both immediate remediation and long-term architectural improvements. Organizations should prioritize updating all affected software components to patched versions, with the most critical action being the upgrade of Xpdf, CUPS, and Poppler to their respective secure versions. Additionally, implementing proper input validation mechanisms and memory safety checks within PDF processing applications can help prevent similar vulnerabilities from occurring in the future. Network-level defenses such as PDF content filtering and sandboxing mechanisms can provide additional protection layers. The vulnerability demonstrates the importance of maintaining up-to-date security patches and implementing robust software development practices that emphasize memory safety and input validation, particularly for components handling untrusted data streams. Security monitoring should include detection of suspicious PDF file processing activities and anomalous memory access patterns that may indicate exploitation attempts.