CVE-2021-20077
Amazon EC2 Nessus Agent IAM Role Token Capture
Description
Nessus Agent versions 7.2.0 through 8.2.2 were found to inadvertently capture the IAM role security token on the local host during initial linking of the Nessus Agent when installed on an Amazon EC2 instance. This could allow a privileged attacker to obtain the token.
INFO
Published Date :
March 19, 2021, 7:15 p.m.
Last Modified :
Oct. 28, 2022, 2:28 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
0.8
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-2021-20077.
| URL | Resource |
|---|---|
| https://www.tenable.com/security/tns-2021-04-0 | Patch Vendor Advisory |
| https://www.tenable.com/security/tns-2021-07 | Not Applicable 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-2021-20077 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-20077 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]
Oct. 28, 2022
Action Type Old Value New Value Changed Reference Type https://www.tenable.com/security/tns-2021-07 Patch, Vendor Advisory https://www.tenable.com/security/tns-2021-07 Not Applicable, Vendor Advisory Changed CPE Configuration OR *cpe:2.3:a:tenable:nessus_agent:*:*:*:*:*:*:*:* versions from (including) 7.2.0 up to (including) 8.13.2 OR *cpe:2.3:a:tenable:nessus_agent:*:*:*:*:*:*:*:* versions from (including) 7.2.0 up to (excluding) 8.2.3 -
CVE Modified by [email protected]
Sep. 23, 2022
Action Type Old Value New Value Changed Description Nessus versions 8.13.2 and earlier were found to contain a privilege escalation vulnerability which could allow a Nessus administrator user to upload a specially crafted file that could lead to gaining administrator privileges on the Nessus host. Nessus Agent versions 7.2.0 through 8.2.2 were found to inadvertently capture the IAM role security token on the local host during initial linking of the Nessus Agent when installed on an Amazon EC2 instance. This could allow a privileged attacker to obtain the token. -
CWE Remap by [email protected]
Jul. 12, 2022
Action Type Old Value New Value Changed CWE CWE-732 NVD-CWE-noinfo -
Modified Analysis by [email protected]
Jun. 05, 2022
Action Type Old Value New Value Removed CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:N/A:N) Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C) Removed CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N Added CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://www.tenable.com/security/tns-2021-04-0 No Types Assigned https://www.tenable.com/security/tns-2021-04-0 Patch, Vendor Advisory Changed Reference Type https://www.tenable.com/security/tns-2021-07 No Types Assigned https://www.tenable.com/security/tns-2021-07 Patch, Vendor Advisory Changed CPE Configuration OR *cpe:2.3:a:tenable:nessus_agent:*:*:*:*:*:*:*:* versions from (including) 7.2.0 up to (including) 8.2.2 OR *cpe:2.3:a:tenable:nessus_agent:*:*:*:*:*:*:*:* versions from (including) 7.2.0 up to (including) 8.13.2 -
CVE Modified by [email protected]
Jul. 01, 2021
Action Type Old Value New Value Added Reference https://www.tenable.com/security/tns-2021-04-0 [No Types Assigned] -
CVE Modified by [email protected]
Apr. 08, 2021
Action Type Old Value New Value Changed Description Nessus Agent versions 7.2.0 through 8.2.2 were found to inadvertently capture the IAM role security token on the local host during initial linking of the Nessus Agent when installed on an Amazon EC2 instance. This could allow a privileged attacker to obtain the token. Nessus versions 8.13.2 and earlier were found to contain a privilege escalation vulnerability which could allow a Nessus administrator user to upload a specially crafted file that could lead to gaining administrator privileges on the Nessus host. Removed Reference https://www.tenable.com/security/tns-2021-04-0 [Third Party Advisory] -
CVE Modified by [email protected]
Apr. 06, 2021
Action Type Old Value New Value Added Reference https://www.tenable.com/security/tns-2021-07 [No Types Assigned] -
Initial Analysis by [email protected]
Mar. 26, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:N/A:N) Added CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N Changed Reference Type https://www.tenable.com/security/tns-2021-04-0 No Types Assigned https://www.tenable.com/security/tns-2021-04-0 Third Party Advisory Added CWE NIST CWE-732 Added CPE Configuration OR *cpe:2.3:a:tenable:nessus_agent:*:*:*:*:*:*:*:* versions from (including) 7.2.0 up to (including) 8.2.2
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-20077 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-2021-20077
weaknesses.
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
0.10264
percentile