KeySight N6841A RF Sensor UserFirmwareRequestHandler Directory Traversal Information Disclosure Vulnerability

May 27th, 2022
ZDI-22-805 ZDI-CAN-15525

CVE ID

CVE-2022-1661

CVSS Score

7.5 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors

KeySight

Affected Products

N6841A RF Sensor

Vulnerability Details

This vulnerability allows remote attackers to disclose sensitive information on affected installations of KeySight N6841A RF Sensor. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the UserFirmwareRequestHandler class. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to disclose files in the context of SYSTEM.

Additional Details

KeySight has issued an update to correct this vulnerability. More details can be found at:
https://www.cisa.gov/uscert/ics/advisories/icsa-22-146-01

Disclosure Timeline

  • 2021-12-30 - Vulnerability reported to vendor
  • 2022-05-27 - Coordinated public release of advisory

Credit

rgod

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