Customer Support - Knowledge Base

SUPPORT COMMUNICATION- SECURITY BULLETIN

Document ID: c06521007

Version: 1

HPSBPI03634 rev. 1 - HP OfficeJet Mobile and Sprocket Printers KNOB Vulnerability

Notice:: The information in this security bulletin should be acted upon as soon as possible.

Release date : 04-Dec-2019

Last updated : 04-Dec-2019

Potential Security Impact:
Disclosure and Modification of Information
Source: HP, HP Product Security Response Team (PSRT)
Reported by: N/A

VULNERABILITY SUMMARY
Certain HP printers are vulnerable to the Key Negotiation of Bluetooth (KNOB) attack. Data over Bluetooth can be intercepted, decrypted, and modified by an unauthorized local party.
Reference Number
CVE-2019-9506, PSR-2019-0174
SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
Please refer to the RESOLUTION below for a list of potentially impacted products.
note:
All product versions are impacted prior to the firmware versions listed.
BACKGROUND
For a PGP signed version of this security bulletin please write to: hp-security-alert
CVSS 3.0 Base Metrics
Reference
Base vector
Base score
CVE-2019-9506
CVSS:3.0/ AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
8.1 (High)
RESOLUTION
The below options highlight the devices affected by this vulnerability and remediation actions to take.

Firmware update

Update firmware for impacted printers as indicated in the table below.
Product name
Model number
Firmware revision
HP OfficeJet 200 Mobile Printer series
CZ993A
L9B95A
1940A or later
HP OfficeJet 202 Mobile Printer
N4L14C
N4K99C
1940A or later 
HP OfficeJet 250 Mobile All-in-One Printer series
CZ992A
L9D57A
N4L17A
1940A or later 
HP OfficeJet 252 Mobile All-in-One Printer
N4L16C
N4L18C
1940A or later 
HP Sprocket 200 Printer series
1AS85A - 1AS98A
1939A or later
HP Sprocket Select Photo Printer series
5XH49A - 5XH50A
1941A or later
HP Sprocket Studio series
3MP72A - 3MP74A
6SE08A
3XT68A
1942A or later
To obtain the updated firmware, read the section that matches your printer name.

Operating system update

For certain HP Sprocket models, mentioned in the table below, an operating system patch will need to be applied to remediate the issue. Please follow the instructions below from your device vendor (tablet or mobile device):
iPhone or iPad (iOS):
Android devices: Android Security Bulletin - August 2019 (in English)
Product name
Model number
HP Sprocket Photo Printer
X7N07A - X7N08A
Z3Z89A - Z3Z94A
Z9L25A - Z9L29A
5DP49A
1BG86A
7CF16A
HP Sprocket 2-in-1 Printer
2FB96A - 2FB98A
HP Sprocket Plus Printer
2FR85A - 2FR87A
Third Party Security Patches: Third party security patches that are to be installed on systems running HP software products should be applied in accordance with the customer's patch management policy.
Security Bulletin Archive: To view released Security Bulletins, search the HP Support Site for "security bulletin".
Software Product Category: The Software Product Category is represented in the title by the two characters following HPSB.
PI
HP Printing and Imaging
HF
HP Hardware and Firmware
GN
HP General Software
REVISION HISTORY : Version 1: 4 December 2019 - Initial release.

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