PT-2022-27853 · Microchip · Microchip Rn4870 Module Firmware+1

Published 2022-12-19 · Updated 2022-12-27 · CVE-2022-46401

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Microchip RN4870 module firmware version 1.43 Microchip PIC LightBlue Explorer Demo version 4.2 DT100112

Description The issue concerns the acceptance of PauseEncReqPlainText before pairing is complete. This affects the Microchip RN4870 module firmware and the Microchip PIC LightBlue Explorer Demo.

Recommendations For Microchip RN4870 module firmware version 1.43, consider disabling the use of PauseEncReqPlainText until a patch is available. For Microchip PIC LightBlue Explorer Demo version 4.2 DT100112, restrict access to the vulnerable functionality related to PauseEncReqPlainText to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2022-46401

Affected Products

Microchip Pic Lightblue Explorer Demo

Microchip Rn4870 Module Firmware

References · 9

• 🔥 https://computer.org/csdl/proceedings-article/sp/2023/933600a521/1He7Yja1AYM · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2022-46401 · Security Note
• https://microchip.com/en-us/products/wireless-connectivity/software-vulnerability-response/deviating-behaviors-in-bluetooth-le · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-46401 · Vendor Advisory
• https://t.me/cvenotify/40202 · Telegram Post
• https://microchip.com · Note
• https://t.me/cibsecurity/54938 · Telegram Post
• https://computer.org/csdl/proceedings/sp/2023/1He7WWuJExG · Note
• https://t.me/cvenotify/40212 · Telegram Post