Medium severity · published May 9, 2023
CVE-2021-26371
A compromised or malicious ABL or UApp could send a SHA256 system call to the bootloader, which may result in exposure of ASP memory to userspace, potentially leading to…
5.5
CVSS
0.2%
EPSS
No
On KEV
Description
A compromised or malicious ABL or UApp could
send a SHA256 system call to the bootloader, which may result in exposure of
ASP memory to userspace, potentially leading to information disclosure.
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)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
E7
Epyc 7001 Firmware · Amd
before naplespi_1.0.0.h · source: NVD
E7
Epyc 7002 Firmware · Amd
before romepi_1.0.0.d · source: NVD
E7
Epyc 7003 Firmware · Amd
before milanpi_1.0.0.6 · source: NVD
E7
Epyc 7232p Firmware · Amd
before romepi_1.0.0.d · source: NVD
E7
Epyc 7251 Firmware · Amd
before naplespi_1.0.0.h · source: NVD
E7
Epyc 7252 Firmware · Amd
before romepi_1.0.0.d · source: NVD
E7
Epyc 7261 Firmware · Amd
before naplespi_1.0.0.h · source: NVD
E7
Epyc 7262 Firmware · Amd
before romepi_1.0.0.d · source: NVD
E7
Epyc 7272 Firmware · Amd
before romepi_1.0.0.d · source: NVD
E7
Epyc 7281 Firmware · Amd
before naplespi_1.0.0.h · source: NVD
E7
Epyc 7282 Firmware · Amd
before romepi_1.0.0.d · source: NVD
E7
Epyc 72f3 Firmware · Amd
before milanpi_1.0.0.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-26371
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-26371
Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001
Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001
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