Vulnerability Name:

CVE-2021-26333 (CCN-209359)

Assigned:2021-09-14
Published:2021-09-14
Updated:2022-04-26
Summary:An information disclosure vulnerability exists in AMD Platform Security Processor (PSP) chipset driver. The discretionary access control list (DACL) may allow low privileged users to open a handle and send requests to the driver resulting in a potential data leak from uninitialized physical pages.
CVSS v3 Severity:5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
4.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/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): High
Integrity (I): None
Availibility (A): None
5.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
4.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/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): High
Integrity (I): None
Availibility (A): None
CVSS v2 Severity:4.9 Medium (CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): None
Availibility (A): None
4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): None
Availibility (A): None
Vulnerability Type:CWE-909
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2021-26333

Source: MISC
Type: Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/164202/AMD-Chipset-Driver-Information-Disclosure-Memory-Leak.html

Source: FULLDISC
Type: Mailing List, Third Party Advisory
20210917 AMD Chipset Driver Information Disclosure Vulnerability [CVE-2021-26333]

Source: XF
Type: UNKNOWN
amd-cve202126333-info-disc(209359)

Source: CCN
Type: Lenovo Security Advisory: LEN-67364
AMD Chipset Driver Information Disclosure Vulnerability

Source: CCN
Type: AMD Security Advisory: AMD-SB-1009
AMD Chipset Driver Information Disclosure Vulnerability

Source: MISC
Type: Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1009

Vulnerable Configuration:Configuration 1:
  • cpe:/a:amd:chipset_driver:*:*:*:*:*:*:*:* (Version < 3.08.17.735)
  • OR cpe:/a:amd:psp_driver:*:*:*:*:*:*:*:* (Version < 5.17.0.0)

  • * Denotes that component is vulnerable
    BACK
    amd chipset driver *
    amd psp driver *