CVE-2021-27217
YubiHSM 2 SDK DoS Vulnerability in yubihsm-shell
Description
An issue was discovered in the _send_secure_msg() function of Yubico yubihsm-shell through 2.0.3. The function does not correctly validate the embedded length field of an authenticated message received from the device. Out-of-bounds reads performed by aes_remove_padding() can crash the running process, depending on the memory layout. This could be used by an attacker to cause a client-side denial of service. The yubihsm-shell project is included in the YubiHSM 2 SDK product.
INFO
Published Date :
March 4, 2021, 6:15 p.m.
Last Modified :
March 26, 2021, 8:07 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
0.7
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-2021-27217.
| URL | Resource |
|---|---|
| https://blog.inhq.net/posts/yubico-libyubihsm-vuln2 | Exploit Third Party Advisory |
| https://github.com/Yubico/yubihsm-shell/releases | Release Notes Third Party Advisory |
| https://www.yubico.com/support/security-advisories/ysa-2021-01/ | 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-2021-27217 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-27217 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 -
Modified Analysis by [email protected]
Mar. 26, 2021
Action Type Old Value New Value Changed Reference Type https://blog.inhq.net/posts/yubico-libyubihsm-vuln2 No Types Assigned https://blog.inhq.net/posts/yubico-libyubihsm-vuln2 Exploit, Third Party Advisory -
CVE Modified by [email protected]
Mar. 16, 2021
Action Type Old Value New Value Added Reference https://blog.inhq.net/posts/yubico-libyubihsm-vuln2 [No Types Assigned] -
Reanalysis by [email protected]
Mar. 15, 2021
Action Type Old Value New Value Removed CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P) Added CVSS V2 NIST (AV:N/AC:M/Au:S/C:N/I:N/A:P) Removed CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Added CVSS V3.1 NIST AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H -
Initial Analysis by [email protected]
Mar. 12, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://github.com/Yubico/yubihsm-shell/releases No Types Assigned https://github.com/Yubico/yubihsm-shell/releases Release Notes, Third Party Advisory Changed Reference Type https://www.yubico.com/support/security-advisories/ysa-2021-01/ No Types Assigned https://www.yubico.com/support/security-advisories/ysa-2021-01/ Vendor Advisory Added CWE NIST CWE-125 Added CPE Configuration OR *cpe:2.3:a:yubico:yubihsm-shell:*:*:*:*:*:*:*:* versions up to (including) 2.0.3
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-27217 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-2021-27217
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.14 }} 0.03%
score
0.48706
percentile