Vulnerability Name:

CVE-2021-26332 (CCN-226272)

Assigned:2021-01-29
Published:2022-05-10
Updated:2022-05-16
Summary:Failure to verify SEV-ES TMR is not in MMIO space, SEV-ES FW could result in a potential loss of integrity or availability.
CVSS v3 Severity:7.1 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H)
6.2 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): High
Availibility (A): High
5.1 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L)
4.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): Low
CVSS v2 Severity:6.6 Medium (CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Complete
Availibility (A): Complete
3.6 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): Partial
Vulnerability Type:CWE-noinfo
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2021-26332

Source: XF
Type: UNKNOWN
amd-cve202126332-sec-bypass(226272)

Source: MISC
Type: Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021

Source: CCN
Type: AMD-SB-1028
AMD Server Vulnerabilities - May 2022

Vulnerable Configuration:Configuration 1:
  • cpe:/o:amd:epyc_7763_firmware:*:*:*:*:*:*:*:* (Version < milanpi-sp3_1.0.0.4)
  • AND
  • cpe:/h:amd:epyc_7763:-:*:*:*:*:*:*:*

  • Configuration 2:
  • cpe:/o:amd:epyc_7713p_firmware:*:*:*:*:*:*:*:* (Version < milanpi-sp3_1.0.0.4)
  • AND
  • cpe:/h:amd:epyc_7713p:-:*:*:*:*:*:*:*

  • Configuration 3:
  • cpe:/o:amd:epyc_7713_firmware:*:*:*:*:*:*:*:* (Version < milanpi-sp3_1.0.0.4)
  • AND
  • cpe:/h:amd:epyc_7713:-:*:*:*:*:*:*:*

  • Configuration 4:
  • cpe:/o:amd:epyc_7663_firmware:*:*:*:*:*:*:*:* (Version < milanpi-sp3_1.0.0.4)
  • AND
  • cpe:/h:amd:epyc_7663:-:*:*:*:*:*:*:*

  • Configuration 5:
  • cpe:/o:amd:epyc_7643_firmware:*:*:*:*:*:*:*:* (Version < milanpi-sp3_1.0.0.4)
  • AND
  • cpe:/h:amd:epyc_7643:-:*:*:*:*:*:*:*

  • Configuration 6:
  • cpe:/o:amd:epyc_75f3_firmware:*:*:*:*:*:*:*:* (Version < milanpi-sp3_1.0.0.4)
  • AND
  • cpe:/h:amd:epyc_75f3:-:*:*:*:*:*:*:*

  • Configuration 7:
  • cpe:/o:amd:epyc_7543p_firmware:*:*:*:*:*:*:*:* (Version < milanpi-sp3_1.0.0.4)
  • AND
  • cpe:/h:amd:epyc_7543p:-:*:*:*:*:*:*:*

  • Configuration 8:
  • cpe:/o:amd:epyc_7543_firmware:*:*:*:*:*:*:*:* (Version < milanpi-sp3_1.0.0.4)
  • AND
  • cpe:/h:amd:epyc_7543:-:*:*:*:*:*:*:*

  • Configuration 9:
  • cpe:/o:amd:epyc_7513_firmware:*:*:*:*:*:*:*:* (Version < milanpi-sp3_1.0.0.4)
  • AND
  • cpe:/h:amd:epyc_7513:-:*:*:*:*:*:*:*

  • Configuration 10:
  • cpe:/o:amd:epyc_7453_firmware:*:*:*:*:*:*:*:* (Version < milanpi-sp3_1.0.0.4)
  • AND
  • cpe:/h:amd:epyc_7453:-:*:*:*:*:*:*:*

  • Configuration 11:
  • cpe:/o:amd:epyc_74f3_firmware:*:*:*:*:*:*:*:* (Version < milanpi-sp3_1.0.0.4)
  • AND
  • cpe:/h:amd:epyc_74f3:-:*:*:*:*:*:*:*

  • Configuration 12:
  • cpe:/o:amd:epyc_7443p_firmware:*:*:*:*:*:*:*:* (Version < milanpi-sp3_1.0.0.4)
  • AND
  • cpe:/h:amd:epyc_7443p:-:*:*:*:*:*:*:*

  • Configuration 13:
  • cpe:/o:amd:epyc_7443_firmware:*:*:*:*:*:*:*:* (Version < milanpi-sp3_1.0.0.4)
  • AND
  • cpe:/h:amd:epyc_7443:-:*:*:*:*:*:*:*

  • Configuration 14:
  • cpe:/o:amd:epyc_7413_firmware:*:*:*:*:*:*:*:* (Version < milanpi-sp3_1.0.0.4)
  • AND
  • cpe:/h:amd:epyc_7413:-:*:*:*:*:*:*:*

  • Configuration 15:
  • cpe:/o:amd:epyc_73f3_firmware:*:*:*:*:*:*:*:* (Version < milanpi-sp3_1.0.0.4)
  • AND
  • cpe:/h:amd:epyc_73f3:-:*:*:*:*:*:*:*

  • Configuration 16:
  • cpe:/o:amd:epyc_7343_firmware:*:*:*:*:*:*:*:* (Version < milanpi-sp3_1.0.0.4)
  • AND
  • cpe:/h:amd:epyc_7343:-:*:*:*:*:*:*:*

  • Configuration 17:
  • cpe:/o:amd:epyc_7313p_firmware:*:*:*:*:*:*:*:* (Version < milanpi-sp3_1.0.0.4)
  • AND
  • cpe:/h:amd:epyc_7313p:-:*:*:*:*:*:*:*

  • Configuration 18:
  • cpe:/o:amd:epyc_7313_firmware:*:*:*:*:*:*:*:* (Version < milanpi-sp3_1.0.0.4)
  • AND
  • cpe:/h:amd:epyc_7313:-:*:*:*:*:*:*:*

  • Configuration 19:
  • cpe:/o:amd:epyc_72f3_firmware:*:*:*:*:*:*:*:* (Version < milanpi-sp3_1.0.0.4)
  • AND
  • cpe:/h:amd:epyc_72f3:-:*:*:*:*:*:*:*

  • Configuration 20:
  • cpe:/o:amd:epyc_7773x_firmware:*:*:*:*:*:*:*:* (Version < milanpi-sp3_1.0.0.4)
  • AND
  • cpe:/h:amd:epyc_7773x:-:*:*:*:*:*:*:*

  • Configuration 21:
  • cpe:/o:amd:epyc_7473x_firmware:*:*:*:*:*:*:*:* (Version < milanpi-sp3_1.0.0.4)
  • AND
  • cpe:/h:amd:epyc_7473x:-:*:*:*:*:*:*:*

  • Configuration 22:
  • cpe:/o:amd:epyc_7573x_firmware:*:*:*:*:*:*:*:* (Version < milanpi-sp3_1.0.0.4)
  • AND
  • cpe:/h:amd:epyc_7573x:-:*:*:*:*:*:*:*

  • Configuration 23:
  • cpe:/o:amd:epyc_7373x_firmware:*:*:*:*:*:*:*:* (Version < milanpi-sp3_1.0.0.4)
  • AND
  • cpe:/h:amd:epyc_7373x:-:*:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    BACK
    amd epyc 7763 firmware *
    amd epyc 7763 -
    amd epyc 7713p firmware *
    amd epyc 7713p -
    amd epyc 7713 firmware *
    amd epyc 7713 -
    amd epyc 7663 firmware *
    amd epyc 7663 -
    amd epyc 7643 firmware *
    amd epyc 7643 -
    amd epyc 75f3 firmware *
    amd epyc 75f3 -
    amd epyc 7543p firmware *
    amd epyc 7543p -
    amd epyc 7543 firmware *
    amd epyc 7543 -
    amd epyc 7513 firmware *
    amd epyc 7513 -
    amd epyc 7453 firmware *
    amd epyc 7453 -
    amd epyc 74f3 firmware *
    amd epyc 74f3 -
    amd epyc 7443p firmware *
    amd epyc 7443p -
    amd epyc 7443 firmware *
    amd epyc 7443 -
    amd epyc 7413 firmware *
    amd epyc 7413 -
    amd epyc 73f3 firmware *
    amd epyc 73f3 -
    amd epyc 7343 firmware *
    amd epyc 7343 -
    amd epyc 7313p firmware *
    amd epyc 7313p -
    amd epyc 7313 firmware *
    amd epyc 7313 -
    amd epyc 72f3 firmware *
    amd epyc 72f3 -
    amd epyc 7773x firmware *
    amd epyc 7773x -
    amd epyc 7473x firmware *
    amd epyc 7473x -
    amd epyc 7573x firmware *
    amd epyc 7573x -
    amd epyc 7373x firmware *
    amd epyc 7373x -