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TITLE:
HP LaserJet Printers / Digital Senders Unauthorized Firmware Update
Security Issue

SECUNIA ADVISORY ID:
SA47063

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/47063/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=47063

RELEASE DATE:
2011-12-01

DISCUSS ADVISORY:
http://secunia.com/advisories/47063/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/47063/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
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 * Secunia Analysis
 * Systems Affected
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 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=47063

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
A security issue has been reported in various HP LaserJet Printers
and HP Digital Senders, which can be exploited by malicious people to
bypass certain security restrictions.

The security issue is caused due to an error within the Remote
Firmware Update (RFU) mechanism, which does not check for
authentication when handling firmware updates. This can be exploited
to upload a malicious firmware to device via a specially crafted
request to TCP port 9100.

Please see the vendor's advisory for the list of affected products.

SOLUTION:
Disable the "Printer Firmware Update" setting.

PROVIDED AND/OR DISCOVERED BY:
Salvatore Stolfo and Ang Cui, Columbia University.

ORIGINAL ADVISORY:
HPSBPI02728 SSRT100692:
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03102449

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

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Definitions: (Criticality, Where etc.)
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Please Note:
Secunia recommends that you verify all advisories you receive by
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Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
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