CVE-2023-50734 in CX331adwe
Summary
by MITRE • 02/28/2024
A buffer overflow vulnerability has been identified in PostScript interpreter in various Lexmark devices. The vulnerability can be leveraged by an attacker to execute arbitrary code.
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Analysis
by VulDB Data Team • 04/15/2026
The buffer overflow vulnerability CVE-2023-50734 resides within the PostScript interpreter component of multiple Lexmark printing devices, representing a critical security weakness that could enable remote code execution. This flaw exists in the way the affected devices process PostScript commands, specifically when handling malformed input data within print job submissions. The vulnerability affects a range of Lexmark printer models that utilize PostScript processing capabilities, making it a significant concern for organizations relying on these devices for document printing and management. The flaw stems from inadequate bounds checking during the interpretation of PostScript instructions, allowing an attacker to overflow a fixed-size buffer and potentially overwrite adjacent memory locations.
The technical implementation of this vulnerability demonstrates characteristics consistent with CWE-121, which addresses stack-based buffer overflow conditions where insufficient bounds checking permits a buffer to be overwritten with data exceeding its allocated size. The attack vector typically involves sending a specially crafted PostScript file or print job to the affected Lexmark device, which then processes the malicious input through its interpreter without proper validation. This process creates an opportunity for an attacker to manipulate the program execution flow by overwriting return addresses or function pointers within the device's memory space, ultimately enabling arbitrary code execution on the target system.
The operational impact of CVE-2023-50734 extends beyond simple remote code execution, as it represents a potential gateway for broader network compromise within organizational environments. Attackers could leverage this vulnerability to establish persistent access to printing infrastructure, potentially using the compromised devices as stepping stones for lateral movement within corporate networks. The affected Lexmark devices often serve as critical components in enterprise document management systems, making them attractive targets for adversaries seeking to gain unauthorized access to sensitive information or disrupt business operations. Additionally, the vulnerability's exploitation could lead to denial of service conditions where legitimate print jobs fail to process properly due to memory corruption.
Organizations should implement immediate mitigations including firmware updates from Lexmark to address the buffer overflow in the PostScript interpreter, while also establishing network segmentation to isolate printing infrastructure from critical business systems. The vulnerability aligns with ATT&CK technique T1059.007 for command and scripting interpreter, as successful exploitation would likely involve executing malicious code within the device's operational environment. Network monitoring should be enhanced to detect unusual print job patterns or attempts to submit malformed PostScript content, while access controls should be strengthened to limit who can submit print jobs to affected devices. System administrators should also consider disabling unnecessary PostScript processing capabilities when not required for specific print operations, reducing the attack surface for potential exploitation attempts.