7.8
HIGH
CVE-2021-26315
AMD PSP Boot Rom Firmware Execution
Description

When the AMD Platform Security Processor (PSP) boot rom loads, authenticates, and subsequently decrypts an encrypted FW, due to insufficient verification of the integrity of decrypted image, arbitrary code may be executed in the PSP when encrypted firmware images are used.

INFO

Published Date :

Nov. 16, 2021, 7:15 p.m.

Last Modified :

Nov. 18, 2021, 7:14 p.m.

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

1.8
Affected Products

The following products are affected by CVE-2021-26315 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Amd epyc_7003_firmware
2 Amd epyc_72f3_firmware
3 Amd epyc_7313_firmware
4 Amd epyc_7313p_firmware
5 Amd epyc_7343_firmware
6 Amd epyc_73f3_firmware
7 Amd epyc_7413_firmware
8 Amd epyc_7443_firmware
9 Amd epyc_7443p_firmware
10 Amd epyc_7453_firmware
11 Amd epyc_74f3_firmware
12 Amd epyc_7513_firmware
13 Amd epyc_7543_firmware
14 Amd epyc_7543p_firmware
15 Amd epyc_75f3_firmware
16 Amd epyc_7643_firmware
17 Amd epyc_7663_firmware
18 Amd epyc_7713_firmware
19 Amd epyc_7713p_firmware
20 Amd epyc_7763_firmware
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-26315.

URL Resource
https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021 Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-26315 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-26315 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Nov. 18, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021 No Types Assigned https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1021 Vendor Advisory
    Added CWE NIST CWE-345
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7003_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7003:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_72f3_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_72f3:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7313_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7313:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7313p_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7313p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7343_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7343:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_73f3_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_73f3:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7413_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7413:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7443_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7443:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7443p_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7443p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7453_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7453:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_74f3_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_74f3:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7513_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7513:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7543_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7543:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7543p_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7543p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_75f3_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_75f3:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7643_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7643:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7663_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7663:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7713_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7713:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7713p_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7713p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7763_firmware:*:*:*:*:*:*:*:* versions up to (excluding) milanpi-sp3_1.0.0.4 OR cpe:2.3:h:amd:epyc_7763:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-26315 is associated with the following CWEs:

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.04 }} 0.00%

score

0.10292

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability