Lexmark laser printers contain multiple vulnerabilities

2014.02.05
Credit: USCERT
Risk: High
Local: No
Remote: Yes
CWE: CWE-79


CVSS Base Score: 3.5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 6.8/10
Exploit range: Remote
Attack complexity: Medium
Authentication: Single time
Confidentiality impact: None
Integrity impact: Partial
Availability impact: None

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. 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. 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.

References:

http://www.kb.cert.org/vuls/id/108062


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