CVE-2011-1706 in iPrint
Summary
by MITRE
Stack-based buffer overflow in nipplib.dll in Novell iPrint Client before 5.64 allows remote attackers to execute arbitrary code via a crafted iprint-client-config-info parameter in a printer-url.
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Analysis
by VulDB Data Team • 11/08/2021
The vulnerability identified as CVE-2011-1706 represents a critical stack-based buffer overflow flaw within the nipplib.dll library of Novell iPrint Client software. This vulnerability exists in versions prior to 5.64 and specifically targets the handling of printer URL parameters. The flaw manifests when the software processes a crafted iprint-client-config-info parameter, creating an exploitable condition that can be leveraged by remote attackers to gain unauthorized code execution privileges on affected systems.
The technical implementation of this vulnerability stems from inadequate input validation within the nipplib.dll component responsible for processing iPrint client configuration information. When a maliciously crafted printer URL is processed, the software fails to properly bounds-check the iprint-client-config-info parameter, allowing an attacker to overwrite adjacent memory locations on the stack. This memory corruption can be carefully manipulated to overwrite return addresses and function pointers, enabling arbitrary code execution with the privileges of the affected application process.
From an operational perspective, this vulnerability presents significant security implications for organizations utilizing Novell iPrint Client software. Attackers can exploit this flaw remotely without requiring local access or authentication credentials, making it particularly dangerous in networked environments where print services are commonly exposed. The vulnerability affects systems running vulnerable versions of Novell iPrint Client, potentially allowing attackers to execute malicious code, escalate privileges, or establish persistent access to network resources. The impact extends beyond individual system compromise as compromised print servers can serve as entry points for broader network infiltration.
The vulnerability aligns with CWE-121 Stack-based Buffer Overflow, which classifies this as a classic buffer overflow condition occurring in stack memory allocation. According to MITRE ATT&CK framework, this vulnerability maps to T1059.007 Command and Scripting Interpreter: JavaScript and potentially T1203 Exploitation for Client Execution, as it enables remote code execution through client-side exploitation. Organizations should prioritize immediate patching of affected systems to address this vulnerability, ensuring all instances of Novell iPrint Client are updated to version 5.64 or later. Additionally, network segmentation and access controls should be implemented to limit exposure of print services to untrusted networks, while monitoring systems should be configured to detect anomalous printer URL processing activities that might indicate exploitation attempts.