High severity · published May 10, 2022
CVE-2021-26370
Improper validation of destination address in SVC_LOAD_FW_IMAGE_BY_INSTANCE and SVC_LOAD_BINARY_BY_ATTRIB in a malicious UApp or ABL may allow an attacker to overwrite arbitrary…
7.1
CVSS
0.2%
EPSS
No
On KEV
Description
Improper validation of destination address in SVC_LOAD_FW_IMAGE_BY_INSTANCE and SVC_LOAD_BINARY_BY_ATTRIB in a malicious UApp or ABL may allow an attacker to overwrite arbitrary bootloader memory with SPI ROM contents resulting in a loss of integrity and availability.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
E7
Epyc 7002 Firmware · Amd
before romepi-sp3_1.0.0.c · source: NVD
E7
Epyc 7232p Firmware · Amd
before romepi-sp3_1.0.0.c · source: NVD
E7
Epyc 7252 Firmware · Amd
before romepi-sp3_1.0.0.c · source: NVD
E7
Epyc 7262 Firmware · Amd
before romepi-sp3_1.0.0.c · source: NVD
E7
Epyc 7272 Firmware · Amd
before romepi-sp3_1.0.0.c · source: NVD
E7
Epyc 7282 Firmware · Amd
before romepi-sp3_1.0.0.c · source: NVD
E7
Epyc 72f3 Firmware · Amd
before milanpi-sp3_1.0.0.4 · source: NVD
E7
Epyc 7302 Firmware · Amd
before romepi-sp3_1.0.0.c · source: NVD
E7
Epyc 7302p Firmware · Amd
before romepi-sp3_1.0.0.c · source: NVD
E7
Epyc 7313 Firmware · Amd
before milanpi-sp3_1.0.0.4 · source: NVD
E7
Epyc 7313p Firmware · Amd
before milanpi-sp3_1.0.0.4 · source: NVD
E7
Epyc 7343 Firmware · Amd
before milanpi-sp3_1.0.0.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-26370
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-26370
Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021
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