CVE-2013-6033 in C935dn
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities on Lexmark W840 through LS.HA.P252, T64x before LS.ST.P344, C935dn through LC.JO.P091, C920 through LS.TA.P152, C53x through LS.SW.P069, C52x through LS.FA.P150, E450 through LM.SZ.P124, E350 through LE.PH.P129, and E250 through LE.PM.P126 printers allow remote authenticated users to inject arbitrary web script or HTML by using (1) SNMP or (2) the Embedded Web Server (EWS) to set the (a) Contact or (b) Location field.
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Analysis
by VulDB Data Team • 08/17/2024
The CVE-2013-6033 vulnerability represents a significant security flaw in multiple Lexmark printer models spanning various product lines including W840, T64x, C935dn, C920, C53x, C52x, E450, E350, and E250 series. This vulnerability manifests as multiple cross-site scripting flaws that affect the embedded web server functionality of these devices, creating a dangerous attack surface for authenticated remote adversaries. The vulnerability impacts firmware versions up to specific patch levels, with affected models ranging from the W840 through LS.HA.P252 to the E250 through LE.PM.P126 versions, indicating a widespread issue affecting numerous printer generations.
The technical exploitation of this vulnerability occurs through two primary attack vectors: Simple Network Management Protocol (SNMP) and the Embedded Web Server (EWS). Attackers with valid authentication credentials can manipulate the Contact or Location fields within the printer's web interface to inject malicious JavaScript code or HTML content. This injection occurs because the printer fails to properly sanitize user input before rendering it within the web interface, creating a classic XSS vulnerability. The CWE-79 classification applies here as the system does not adequately validate or escape user-supplied data before incorporating it into dynamically generated web pages. The vulnerability's impact is amplified by the fact that these printers are often deployed in corporate environments where authenticated access might be more readily obtained through legitimate administrative procedures.
The operational impact of this vulnerability extends beyond simple data theft or display manipulation, as it provides attackers with the capability to execute arbitrary code within the context of the victim's browser session. This allows for potential session hijacking, credential theft, and further lateral movement within network environments where these printers are accessible. Attackers could leverage this vulnerability to redirect users to malicious sites, steal session cookies, or even deliver additional malware payloads through the compromised printer interfaces. The attack surface is particularly concerning given that many organizations deploy these printers in shared office environments or network segments where multiple users may have access to the web interface, and the vulnerability requires only authenticated access rather than privileged system-level privileges.
Security mitigations for CVE-2013-6033 should prioritize immediate firmware updates from Lexmark to address the identified XSS vulnerabilities. Organizations must also implement network segmentation to limit access to printer web interfaces, ensuring that only authorized administrative personnel can reach these endpoints. The principle of least privilege should be enforced by restricting SNMP and EWS access to necessary administrative users only, while implementing proper input validation and output encoding mechanisms at the application level. Network monitoring solutions should be configured to detect anomalous patterns in printer web interface access and data injection attempts, while regular security assessments should verify that printer configurations remain secure against similar vulnerabilities. The ATT&CK framework's T1059.007 technique for command and scripting interpreter applies here, as the vulnerability enables attackers to execute malicious scripts through the web interface. Additionally, implementing web application firewalls and content security policies can provide additional layers of protection against exploitation attempts targeting these embedded systems.