Medium severity · published Dec 1, 2021
CVE-2021-40154
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
5.5
CVSS
0.8%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 56% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LF
Lpc55s69jbd100 Firmware · Nxp
All versions, or not specified · source: NVD
LF
Lpc55s69jbd64 Firmware · Nxp
All versions, or not specified · source: NVD
LF
Lpc55s69jev98 Firmware · Nxp
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-40154
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-40154
Third Party Advisory
https://github.com/Xen1thLabs-AE/CVE-2021-40154
Broken Link
https://www.darkmatter.ae/xen1thlabs/published-advisories/
More from Lpc55s69jbd100 Firmware
7.8
CVE-2022-22819
NXP LPC55S66JBD64, LPC55S66JBD100, LPC55S66JEV98, LPC55S69JBD64, LPC55S69JBD100, and LPC55S69JEV98 microcontrollers (ROM version 1B) have a buffer overflow in parsing SB2 updates…
6.8
CVE-2021-31532
NXP LPC55S6x microcontrollers (0A and 1B), i.MX RT500 (silicon rev B1 and B2), i.MX RT600 (silicon rev A0, B0), LPC55S6x, LPC55S2x, LPC552x (silicon rev 0A, 1B), LPC55S1x, LPC551x…