CVE-2013-6032 in C935dn
Summary
by MITRE
cgi-bin/postpf/cgi-bin/dynamic/config/config.html on Lexmark X94x before LC.BR.P142, X85x through LC4.BE.P487, X644 and X646 before LC2.MC.P374, X642 through LC2.MB.P318, W840 through LS.HA.P252, T64x before LS.ST.P344, X64xef through LC2.TI.P325, C935dn through LC.JO.P091, C920 through LS.TA.P152, C78x through LC.IO.P187, X78x through LC2.IO.P335, C77x through LC.CM.P052, X772 through LC2.TR.P291, C53x through LS.SW.P069, C52x through LS.FA.P150, 25xxN through LCL.CU.P114, N4000 through LC.MD.P119, N4050e through GO.GO.N206, N70xxe through LC.CO.N309, E450 through LM.SZ.P124, E350 through LE.PH.P129, and E250 through LE.PM.P126 printers allows remote attackers to remove the Password Protect administrative password via the vac.255.GENPASSWORD parameter.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 08/17/2024
The vulnerability described in CVE-2013-6032 represents a critical security flaw in Lexmark printer firmware versions across multiple product lines including X94x, X85x, X644, X646, X642, W840, T64x, X64xef, C935dn, C920, C78x, X78x, C77x, X772, C53x, C52x, 25xxN, N4000, N4050e, N70xxe, E450, E350, and E250 series. This issue affects a broad range of networked printers manufactured by Lexmark, creating a significant attack surface for remote exploitation. The vulnerability resides within the cgi-bin/postpf/cgi-bin/dynamic/config/config.html web interface component of these devices, which is accessible through standard HTTP protocols.
The technical flaw manifests through improper input validation and authorization checks within the administrative configuration interface. Attackers can exploit this weakness by manipulating the vac.255.GENPASSWORD parameter to remove the Password Protect administrative password protection mechanism. This parameter controls the administrative password functionality and when improperly handled, allows unauthorized users to bypass authentication requirements. The vulnerability directly maps to CWE-284 Access Control Issues, specifically concerning inadequate privileges for administrative functions. The flaw enables a remote attacker to perform administrative actions without proper authentication, essentially providing full control over the affected printer's configuration and potentially the network it operates within.
The operational impact of this vulnerability extends beyond simple unauthorized access to encompass broader security implications for enterprise environments. When exploited, this vulnerability allows attackers to completely remove administrative password protection from affected Lexmark printers, potentially enabling further exploitation through additional attack vectors. The compromised devices could serve as entry points for lateral movement within corporate networks, especially when these printers are connected to internal systems. The vulnerability affects multiple printer families spanning different firmware versions, indicating a systemic flaw in the authentication implementation rather than an isolated incident. This widespread impact aligns with ATT&CK technique T1078 Valid Accounts, where attackers leverage compromised credentials or bypass authentication mechanisms to gain unauthorized access to systems.
Mitigation strategies for this vulnerability require immediate firmware updates from Lexmark to address the authentication bypass issue. Organizations should implement network segmentation to isolate these printers from critical systems and enforce strict firewall rules to limit access to printer management interfaces. Network monitoring should be enhanced to detect unusual access patterns or parameter manipulation attempts targeting the affected configuration pages. Additionally, administrators should disable unnecessary web interfaces on printers when not required for management purposes, and implement strong authentication mechanisms for any remaining administrative access points. The vulnerability also highlights the importance of regular security assessments and firmware update management processes to prevent similar issues in other networked devices within the enterprise infrastructure.