Lexmark laser printers contain multiple vulnerabilities

Overview

Certain Lexmark devices are vulnerable to unverified password changes and stored cross-site scripting attacks.

Description

CWE-620: Unverified Password Change - CVE-2013-6032

Certain models of Lexmark laser printers and MarkNet devices are vulnerable to an attack which allows a remote unauthenticated attacker to change the administrative password of the printer’s web administration interface. The interface does not perform sufficient validation of the vac.255.GENPASSWORD parameter in POST requests to the /cgi-bin/postpf/cgi-bin/dynamic/config/config.html page, allowing an unauthenticated remote attacker to reset the administrative password to an empty string.

CWE-79: Improper Neutralization of Input During Web Page Generation (‘Cross-site Scripting’) - CVE-2013-6033
Certain models of Lexmark laser printers are vulnerable to stored cross-site scripting attacks. The printers’ administrative web interface does not perform sufficient validation of user input to the “Location” and “Contact Name” fields in the “General Settings” configuration page.

A list of affected models and firmware versions can be found at Lexmark’s advisory page.

The CVSS score reflects CVE-2013-6032.

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Impact

An attacker may be able to run arbitrary script in the context of a victim’s browser. The attacker may also be able to gain full administrative control of the printer.

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Solution

Apply an Update

Lexmark advises users to update to the latest firmware version. A list of affected models and firmware versions, as well as accompanying fixes, can be found at Lexmark’s advisory page.

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Vendor Information

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Lexmark International Affected

Notified: October 16, 2013 Updated: January 24, 2014

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

CVSS Metrics

Group	Score	Vector
Base	9	AV:N/AC:L/Au:N/C:P/I:P/A:C
Temporal	7.4	E:F/RL:OF/RC:C
Environmental	1.9	CDP:N/TD:L/CR:ND/IR:ND/AR:ND

References

<http://support.lexmark.com/alerts&gt;

Acknowledgements

Thanks to Jeff Popio for reporting this vulnerability.

This document was written by Todd Lewellen.

Other Information

CVE IDs:	CVE-2013-6032, [CVE-2013-6033 ](<http://web.nvd.nist.gov/vuln/detail/CVE-2013-6033 >)
Date Public:	2014-01-31 Date First Published: