High severity · published Sep 14, 2020
CVE-2020-12788
CMAC verification functionality in Microchip Atmel ATSAMA5 products is vulnerable to vulnerable to timing and power analysis attacks
7.5
CVSS
1.3%
EPSS
No
On KEV
Description
CMAC verification functionality in Microchip Atmel ATSAMA5 products is vulnerable to vulnerable to timing and power analysis attacks.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 71% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AF
Atsama5d21c-cu Firmware · Microchip
All versions, or not specified · source: NVD
AF
Atsama5d21c-cur Firmware · Microchip
All versions, or not specified · source: NVD
AF
Atsama5d225c-d1m-cur Firmware · Microchip
All versions, or not specified · source: NVD
AF
Atsama5d22c-cn Firmware · Microchip
All versions, or not specified · source: NVD
AF
Atsama5d22c-cnr Firmware · Microchip
All versions, or not specified · source: NVD
AF
Atsama5d22c-cu Firmware · Microchip
All versions, or not specified · source: NVD
AF
Atsama5d22c-cur Firmware · Microchip
All versions, or not specified · source: NVD
AF
Atsama5d23c-cn Firmware · Microchip
All versions, or not specified · source: NVD
AF
Atsama5d23c-cnr Firmware · Microchip
All versions, or not specified · source: NVD
AF
Atsama5d23c-cu Firmware · Microchip
All versions, or not specified · source: NVD
AF
Atsama5d23c-cur Firmware · Microchip
All versions, or not specified · source: NVD
AF
Atsama5d24c-cu Firmware · Microchip
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-12788
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-12788
Third Party Advisory
https://labs.f-secure.com/advisories/microchip-atsama5-soc-multiple-vulnerabilities/
More from Atsama5d21c-cu Firmware
7.5
CVE-2020-12789
The Secure Monitor in Microchip Atmel ATSAMA5 products use a hardcoded key to encrypt and authenticate secure applets
7.5
CVE-2020-12787
Microchip Atmel ATSAMA5 products in Secure Mode allow an attacker to bypass existing security mechanisms related to applet handling