CVE-2019-6332 in Inkjet Printer
Summary
by MITRE
A potential security vulnerability has been identified with certain HP InkJet printers. The vulnerability could be exploited to allow cross-site scripting (XSS). Affected products and versions include: HP DeskJet 2600 All-in-One Printer series model numbers 4UJ28B, V1N01A - V1N08A, Y5H60A - Y5H80A; HP DeskJet Ink Advantage 2600 All-in-One Printer series model numbers V1N02A - V1N02B, Y5Z00A - Y5Z04B; HP DeskJet Ink Advantage 5000 All-in-One Printer series model numbers M2U86A - M2U89B; HP DeskJet Ink Advantage 5200 All-in-One Printer series model numbers M2U76A - M2U78B; HP ENVY 5000 All-in-One Printer series model numbers M2U85A - M2U85B, M2U91A - M2U94B, Z4A54A - Z4A74A; HP ENVY Photo 6200 All-in-One Printer series model numbers K7G18A-K7G26B, K7S21B, Y0K13D - Y0K15A; HP ENVY Photo 7100 All-in-One Printer series model numbers 3XD89A, K7G93A-K7G99A, Z3M37A - Z3M52A; HP ENVY Photo 7800 All-in-One Printer series model numbers K7R96A, K7S00A - K7S10D, Y0G42D - Y0G52B; HP Ink Tank Wireless 410 series model numbers Z4B53A - Z4B55A, Z6Z95A - Z6Z99A, 4DX94A - 4DX95A, 4YF79A, Z7A01A; HP OfficeJet 5200 All-in-One Printer series model numbers M2U75A, M2U81A-M2U84B, Z4B12A - Z4B14A, Z4B27A - Z4B29A; HP Smart Tank Wireless 450 series model numbers Z4B56A, Z6Z96A - Z6Z98A.
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Analysis
by VulDB Data Team • 01/10/2020
This vulnerability represents a critical cross-site scripting flaw in multiple HP InkJet printer models that exposes network interfaces to malicious web-based attacks. The issue stems from insufficient input validation within the printer's web server implementation, allowing remote attackers to inject malicious scripts through crafted HTTP requests. The affected devices operate with embedded web servers that handle configuration and status requests, creating an attack surface where unvalidated user input is directly reflected in web responses without proper sanitization or encoding mechanisms. This weakness enables attackers to execute arbitrary JavaScript code within the context of a user's browser session, potentially compromising the confidentiality, integrity, and availability of connected systems.
The technical exploitation of this vulnerability follows standard XSS attack patterns as defined by CWE-79 Cross-site Scripting. Attackers can craft malicious payloads that target the printer's web interface, leveraging the lack of proper input validation and output encoding in the embedded web server software. The vulnerability affects a broad range of HP printer models across multiple product lines including DeskJet, ENVY, and OfficeJet series, indicating a systemic issue within the firmware implementation. The affected model numbers span various firmware versions, suggesting that this is not a simple patchable issue but rather a fundamental flaw in the web server architecture that requires comprehensive firmware updates.
The operational impact of this vulnerability extends beyond simple script execution, as it could enable attackers to perform session hijacking, steal sensitive information, or redirect users to malicious websites. Printers with web interfaces often serve as gateways to internal networks, making them attractive targets for lateral movement attacks. The vulnerability could be exploited through various attack vectors including phishing emails, compromised websites, or malicious network traffic that targets the printer's HTTP endpoints. Security professionals should consider this vulnerability as part of a broader attack chain that could lead to network infiltration, especially in environments where printer interfaces are accessible from untrusted networks.
Organizations should implement immediate mitigations including network segmentation to isolate affected printers from critical systems, disabling unnecessary web interfaces when possible, and applying official firmware updates from HP. The vulnerability aligns with ATT&CK technique T1071.004 Application Layer Protocol: DNS where attackers might leverage printer interfaces for command and control communications. Network monitoring should focus on unusual HTTP traffic patterns to printer interfaces, particularly around the affected model ranges. Regular security assessments should include scanning for exposed printer web interfaces and verifying proper input validation mechanisms. The affected devices should be updated through official HP channels with proper verification of firmware integrity to prevent exploitation through malicious update mechanisms.