CVE-2021-27791
Brocade Fabric OS Authentication Header Buffer Overflow Vulnerability
Description
The function that is used to parse the Authentication header in Brocade Fabric OS Web application service before Brocade Fabric OS v9.0.1a and v8.2.3a fails to properly process a malformed authentication header from the client, resulting in reading memory addresses outside the intended range. An unauthenticated attacker could discover a request, which could bypass the authentication process.
INFO
Published Date :
Aug. 12, 2021, 3:15 p.m.
Last Modified :
July 12, 2022, 5:42 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
2.5
Exploitability Score :
2.8
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-2021-27791.
| URL | Resource |
|---|---|
| https://security.netapp.com/advisory/ntap-20210819-0002/ | Third Party Advisory |
| https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2021-1491 | 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-2021-27791 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-27791 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 -
CWE Remap by [email protected]
Jul. 12, 2022
Action Type Old Value New Value Changed CWE CWE-287 CWE-125 -
Reanalysis by [email protected]
Aug. 23, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:broadcom:fabric_operating_system:*:*:*:*:*:*:*:* versions from (including) 8.2.1 up to (excluding) 8.2.3 *cpe:2.3:o:broadcom:fabric_operating_system:8.2.3:*:*:*:*:*:*:* *cpe:2.3:o:broadcom:fabric_operating_system:*:*:*:*:*:*:*:* versions from (including) 9.0.0 up to (excluding) 9.0.1 *cpe:2.3:o:broadcom:fabric_operating_system:9.0.1:*:*:*:*:*:*:* OR *cpe:2.3:o:broadcom:fabric_operating_system:*:*:*:*:*:*:*:* versions from (including) 8.2.1 up to (excluding) 8.2.3a *cpe:2.3:o:broadcom:fabric_operating_system:*:*:*:*:*:*:*:* versions from (including) 9.0.0 up to (excluding) 9.0.1a -
CPE Deprecation Remap by [email protected]
Aug. 23, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:broadcom:fabric_operating_system:8.2.3:-:*:*:*:*:*:* OR *cpe:2.3:o:broadcom:fabric_operating_system:8.2.3:*:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
Aug. 23, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:broadcom:fabric_operating_system:9.0.1:-:*:*:*:*:*:* OR *cpe:2.3:o:broadcom:fabric_operating_system:9.0.1:*:*:*:*:*:*:* -
Initial Analysis by [email protected]
Aug. 23, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Changed Reference Type https://security.netapp.com/advisory/ntap-20210819-0002/ No Types Assigned https://security.netapp.com/advisory/ntap-20210819-0002/ Third Party Advisory Changed Reference Type https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2021-1491 No Types Assigned https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2021-1491 Vendor Advisory Added CWE NIST CWE-287 Added CPE Configuration OR *cpe:2.3:o:broadcom:fabric_operating_system:*:*:*:*:*:*:*:* versions from (including) 8.2.1 up to (excluding) 8.2.3 *cpe:2.3:o:broadcom:fabric_operating_system:8.2.3:-:*:*:*:*:*:* *cpe:2.3:o:broadcom:fabric_operating_system:*:*:*:*:*:*:*:* versions from (including) 9.0.0 up to (excluding) 9.0.1 *cpe:2.3:o:broadcom:fabric_operating_system:9.0.1:-:*:*:*:*:*:* -
CVE Modified by [email protected]
Aug. 19, 2021
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20210819-0002/ [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-27791 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-2021-27791
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.05 }} 0.00%
score
0.20649
percentile