CVE-2011-1705 in iPrint
Summary
by MITRE
Heap-based buffer overflow in nipplib.dll in Novell iPrint Client before 5.64 allows remote attackers to execute arbitrary code via a crafted client-file-name parameter in a printer-url.
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Analysis
by VulDB Data Team • 05/15/2025
The vulnerability identified as CVE-2011-1705 represents a critical heap-based buffer overflow flaw within the nipplib.dll component of Novell iPrint Client versions prior to 5.64. This vulnerability exists in the handling of printer-url parameters, specifically when processing a crafted client-file-name parameter that can trigger unauthorized code execution. The issue stems from inadequate input validation and memory management within the iPrint client software, creating a pathway for remote attackers to exploit the system through network-based attacks.
The technical nature of this vulnerability places it squarely within the realm of heap-based buffer overflow conditions as classified by CWE-121, which specifically addresses buffer overflow conditions in heap memory. The flaw occurs when the iPrint client processes a malformed printer-url containing an excessively long client-file-name parameter, causing the application to write beyond the bounds of allocated heap memory. This memory corruption can result in arbitrary code execution with the privileges of the affected user, potentially allowing attackers to gain full control over the compromised system. The vulnerability's remote exploitability means that attackers do not require local access to the target system, making it particularly dangerous in networked environments where iPrint clients are deployed.
The operational impact of CVE-2011-1705 extends beyond simple code execution, as it provides attackers with the capability to escalate privileges and potentially establish persistent access to affected systems. Organizations utilizing Novell iPrint Client in their printing infrastructure face significant risk, particularly in environments where the client software is automatically deployed or where users may encounter malicious printer URLs through phishing campaigns or compromised network services. The vulnerability affects systems running vulnerable versions of the Novell iPrint Client, which were widely deployed in enterprise environments, making the exploit potential particularly widespread. Attackers could leverage this vulnerability to perform actions such as installing malware, modifying system configurations, or creating backdoors for continued access, all while maintaining the appearance of legitimate print operations.
Mitigation strategies for CVE-2011-1705 primarily focus on immediate remediation through software updates, with Novell releasing iPrint Client version 5.64 and subsequent releases that address the buffer overflow condition. Organizations should implement network segmentation to limit exposure of iPrint client installations to untrusted networks and consider disabling automatic client installation features that might inadvertently expose systems to malicious printer URLs. Additional protective measures include implementing network access controls to restrict access to printer services and monitoring network traffic for suspicious printer-url patterns that might indicate exploitation attempts. The vulnerability aligns with ATT&CK technique T1059.007 for command and scripting interpreter, as successful exploitation would enable attackers to execute arbitrary commands through the compromised iPrint client. System administrators should also consider implementing application whitelisting policies that restrict the execution of unauthorized print client components, and conduct regular security assessments to identify any remaining vulnerable installations within their network infrastructure.