7.5
HIGH
CVE-2021-26406
AMD Secure Encrypted Virtualization (SEV) OCA Certificate Validation Denial of Service
Description

Insufficient validation in parsing Owner's Certificate Authority (OCA) certificates in SEV (AMD Secure Encrypted Virtualization) and SEV-ES user application can lead to a host crash potentially resulting in denial of service.

INFO

Published Date :

May 9, 2023, 7:15 p.m.

Last Modified :

Nov. 21, 2024, 5:56 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2021-26406 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_7h12_firmware
2 Amd epyc_7f72_firmware
3 Amd epyc_7f52_firmware
4 Amd epyc_7f32_firmware
5 Amd epyc_7742_firmware
6 Amd epyc_7702p_firmware
7 Amd epyc_7702_firmware
8 Amd epyc_7662_firmware
9 Amd epyc_7642_firmware
10 Amd epyc_7552_firmware
11 Amd epyc_7542_firmware
12 Amd epyc_7532_firmware
13 Amd epyc_7502p_firmware
14 Amd epyc_7502_firmware
15 Amd epyc_7452_firmware
16 Amd epyc_7402_firmware
17 Amd epyc_7402p_firmware
18 Amd epyc_7352_firmware
19 Amd epyc_7302p_firmware
20 Amd epyc_7302_firmware
21 Amd epyc_7282_firmware
22 Amd epyc_7272_firmware
23 Amd epyc_7262_firmware
24 Amd epyc_7252_firmware
25 Amd epyc_7232p_firmware
26 Amd epyc_7251_firmware
27 Amd epyc_7261_firmware
28 Amd epyc_7281_firmware
29 Amd epyc_7301_firmware
30 Amd epyc_7351_firmware
31 Amd epyc_7371_firmware
32 Amd epyc_7401_firmware
33 Amd epyc_7401p_firmware
34 Amd epyc_7451_firmware
35 Amd epyc_7501_firmware
36 Amd epyc_7551_firmware
37 Amd epyc_7551p_firmware
38 Amd epyc_7601_firmware
39 Amd epyc_7351p_firmware
40 Amd epyc_7571_firmware
41 Amd epyc_7232p
42 Amd epyc_7251
43 Amd epyc_7252
44 Amd epyc_7261
45 Amd epyc_7262
46 Amd epyc_7272
47 Amd epyc_7281
48 Amd epyc_7282
49 Amd epyc_7301
50 Amd epyc_7302
51 Amd epyc_7302p
52 Amd epyc_7351
53 Amd epyc_7351p
54 Amd epyc_7352
55 Amd epyc_7371
56 Amd epyc_7401
57 Amd epyc_7401p
58 Amd epyc_7402
59 Amd epyc_7402p
60 Amd epyc_7451
61 Amd epyc_7452
62 Amd epyc_7501
63 Amd epyc_7502
64 Amd epyc_7502p
65 Amd epyc_7532
66 Amd epyc_7542
67 Amd epyc_7551
68 Amd epyc_7551p
69 Amd epyc_7552
70 Amd epyc_7601
71 Amd epyc_7642
72 Amd epyc_7662
73 Amd epyc_7702
74 Amd epyc_7702p
75 Amd epyc_7742
76 Amd epyc_7f32
77 Amd epyc_7f52
78 Amd epyc_7f72
79 Amd epyc_7h12
80 Amd epyc_7571
: Total Affected Vendor : 1 | Products : 80
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-2021-26406.

URL Resource
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 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 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-2021-26406 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-26406 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 af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001
    Added Reference https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001
  • CVE Modified by [email protected]

    May. 14, 2024

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

    May. 22, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001 No Types Assigned https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3001 Vendor Advisory
    Changed Reference Type https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001 No Types Assigned https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-4001 Vendor Advisory
    Added CWE NIST NVD-CWE-noinfo
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7232p_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7232p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7252_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7252:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7262_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7262:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7272_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7272:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7282_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7282:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7302_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7302:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7302p_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7302p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7352_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7352:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7402_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7402:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7402p_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7402p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7452_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7452:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7502_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7502:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7502p_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7502p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7532_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7532:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7542_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7542:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7552_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7552:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7642_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7642:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7662_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7662:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7702_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7702:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7702p_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7702p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7742_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7742:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7f32_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7f32:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7f52_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7f52:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7f72_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7f72:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7h12_firmware:romepi_1.0.0.a:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7h12:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7251_firmware:naplespi_1.0.0.e:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7251:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7261_firmware:naplespi_1.0.0.e:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7261:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7281_firmware:naplespi_1.0.0.e:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7281:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7301_firmware:naplespi_1.0.0.e:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7301:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7351_firmware:naplespi_1.0.0.e:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7351:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7351p_firmware:naplespi_1.0.0.e:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7351p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7371_firmware:naplespi_1.0.0.e:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7371:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7401_firmware:naplespi_1.0.0.e:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7401:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7401p_firmware:naplespi_1.0.0.e:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7401p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7451_firmware:naplespi_1.0.0.e:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7451:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7501_firmware:naplespi_1.0.0.e:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7501:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7551_firmware:naplespi_1.0.0.e:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7551:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7551p_firmware:naplespi_1.0.0.e:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7551p:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7571_firmware:naplespi_1.0.0.e:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7571:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:amd:epyc_7601_firmware:naplespi_1.0.0.e:*:*:*:*:*:*:* OR cpe:2.3:h:amd:epyc_7601:-:*:*:*:*:*:*:*
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-2021-26406 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-26406 weaknesses.

Exploit Prediction

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

0.10 }} 0.00%

score

0.42187

percentile

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