CVE-2021-40154 — MEDIUM (6.1)

Vulnerability Description

NXP LPC55S69 devices before A3 have a buffer over-read via a crafted wlength value in a GET Descriptor Configuration request during use of USB In-System Programming (ISP) mode. This discloses protected flash memory.

CVSS Score

6.1

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

LOW

Affected Products

Vendor	Product	Versions
Nxp	Lpc55S69Jbd100 Firmware	-
Nxp	Lpc55S69Jbd100	0a
Nxp	Lpc55S69Jbd64 Firmware	-
Nxp	Lpc55S69Jbd64	0a
Nxp	Lpc55S69Jev98 Firmware	-
Nxp	Lpc55S69Jev98	0a

Related Weaknesses (CWE)

CWE-125

References

https://github.com/Xen1thLabs-AE/CVE-2021-40154Third Party Advisory
https://www.darkmatter.ae/xen1thlabs/published-advisories/Broken LinkThird Party Advisory
https://github.com/Xen1thLabs-AE/CVE-2021-40154Third Party Advisory
https://www.darkmatter.ae/xen1thlabs/published-advisories/Broken LinkThird Party Advisory

FAQ

What is CVE-2021-40154?

CVE-2021-40154 is a vulnerability with a CVSS score of 6.1 (MEDIUM). NXP LPC55S69 devices before A3 have a buffer over-read via a crafted wlength value in a GET Descriptor Configuration request during use of USB In-System Programming (ISP) mode. This discloses protecte...

How severe is CVE-2021-40154?

CVE-2021-40154 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-40154?

Check the references section above for vendor advisories and patch information. Affected products include: Nxp Lpc55S69Jbd100 Firmware, Nxp Lpc55S69Jbd100, Nxp Lpc55S69Jbd64 Firmware, Nxp Lpc55S69Jbd64, Nxp Lpc55S69Jev98 Firmware.