CVE-2009-3604 in Poppler
Summary
by MITRE
The Splash::drawImage function in Splash.cc in Xpdf 2.x and 3.x before 3.02pl4, and Poppler 0.x, as used in GPdf and kdegraphics KPDF, does not properly allocate memory, which allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted PDF document that triggers a NULL pointer dereference or a heap-based buffer overflow.
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Analysis
by VulDB Data Team • 12/07/2024
The vulnerability identified as CVE-2009-3604 represents a critical memory management flaw within the Splash graphics rendering component of several PDF processing libraries. This issue affects Xpdf versions 2.x and 3.x prior to 3.02pl4, as well as various Poppler 0.x implementations used in GPdf and KDEgraphics KPDF applications. The flaw manifests in the Splash::drawImage function within Splash.cc, where improper memory allocation handling creates exploitable conditions that can be triggered through maliciously crafted PDF documents. The vulnerability operates at the intersection of memory corruption and graphics processing, making it particularly dangerous as it can be leveraged for both denial of service and potential remote code execution scenarios.
The technical nature of this vulnerability stems from insufficient input validation and memory allocation checks within the Splash graphics engine. When processing PDF images, the drawImage function fails to properly validate image dimensions and memory requirements before attempting allocation operations. This deficiency leads to two primary exploitation vectors: NULL pointer dereference conditions that cause application crashes, and heap-based buffer overflows that can potentially allow arbitrary code execution. The memory corruption occurs when the function attempts to allocate memory for image rendering without adequate bounds checking or null validation, creating opportunities for attackers to manipulate the memory layout through crafted PDF inputs. This type of vulnerability is classified under CWE-125 as "Out-of-bounds Read" and CWE-787 as "Out-of-bounds Write" in the Common Weakness Enumeration catalog, representing fundamental memory safety issues that have been extensively documented in security literature.
The operational impact of CVE-2009-3604 extends beyond simple application instability to potentially enable sophisticated attack scenarios that align with tactics described in the MITRE ATT&CK framework. Specifically, this vulnerability maps to ATT&CK technique T1203 as "Exploitation for Client Execution" and T1499 as "Endpoint Denial of Service" within the attack lifecycle. The remote exploitation capability means that attackers can deliver malicious PDF documents through various vectors including email attachments, web downloads, or compromised websites without requiring local system access. When exploited successfully, the vulnerability can cause complete application crashes, forcing users to restart applications and potentially leading to information loss or system instability. The arbitrary code execution potential, while requiring additional exploitation steps, creates a pathway for attackers to establish persistent access or escalate privileges within affected systems.
Mitigation strategies for CVE-2009-3604 should prioritize immediate patching of affected software versions to the patched releases that address the memory allocation flaws. Organizations should implement comprehensive software inventory management to identify all systems running vulnerable versions of Xpdf, Poppler, GPdf, or KPDF components. Network-based defenses including PDF content filtering and sandboxing mechanisms can provide additional layers of protection while patches are deployed. Security monitoring should focus on detecting unusual PDF processing activities or application crashes that might indicate exploitation attempts. System administrators should also consider implementing application whitelisting policies that restrict execution of known vulnerable libraries, and establish incident response procedures specifically for handling PDF-related security incidents. The vulnerability demonstrates the importance of proper memory management practices and input validation in graphics processing libraries, highlighting the need for regular security assessments of core system components that handle untrusted input data.