PT-2021-17012 · Amd · Amd Platform Security Processor (Psp) Chipset Driver

Kyriakos Economou · Published 2021-09-17 · Updated 2022-04-26 · CVE-2021-26333

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions AMD Platform Security Processor (PSP) chipset driver (affected versions not specified)

Description An information disclosure issue exists in the 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.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Information Disclosure

Weakness Enumeration

CWE-909

CWE-200

Related Identifiers

CVE-2021-26333

Affected Products

Amd Platform Security Processor (Psp) Chipset Driver

References · 9

• https://amd.com/en/corporate/product-security/bulletin/amd-sb-1009 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-26333 · Security Note
• https://osv.dev/vulnerability/CVE-2021-26333 · Vendor Advisory
• https://t.me/cvenotify/29306 · Telegram Post
• https://t.me/defcon_news/85278 · Telegram Post
• https://t.me/cibsecurity/29169 · Telegram Post
• http://packetstormsecurity.com/files/164202/AMD-Chipset-Driver-Information-Disclosure-Memory-Leak.html · Note
• http://seclists.org/fulldisclosure/2021/Sep/24 · Note
• https://t.me/pentestingnews/11075 · Telegram Post