CVE-2021-21814
Cisco HandleFileArg Buffer Overflow Vulnerability
Description
Within the function HandleFileArg the argument filepattern is under control of the user who passes it in from the command line. filepattern is passed directly to strlen to determine the ending location of the char* passed in by the user, no checks are done to see if the passed in char* is longer than the staticly sized buffer data is memcpy‘d into, but after the memcpy a null byte is written to what is assumed to be the end of the buffer to terminate the char*, but without length checks, this null write occurs at an arbitrary offset from the buffer. An attacker can provide malicious input to trigger this vulnerability.
INFO
Published Date :
Aug. 13, 2021, 11:15 p.m.
Last Modified :
Oct. 6, 2022, 6:17 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
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-2021-21814.
| URL | Resource |
|---|---|
| https://talosintelligence.com/vulnerability_reports/TALOS-2021-1280 | Exploit Third Party 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-2021-21814 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-21814 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. 06, 2022
Action Type Old Value New Value -
CVE Modified by [email protected]
Apr. 19, 2022
Action Type Old Value New Value Added CVSS V3 Talos AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H -
Reanalysis by [email protected]
Nov. 18, 2021
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:att:labs\'_xmill:0.7:*:*:*:*:*:*:* OR *cpe:2.3:a:att:xmill:0.7:*:*:*:*:*:*:* -
Initial Analysis by [email protected]
Aug. 23, 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://talosintelligence.com/vulnerability_reports/TALOS-2021-1280 No Types Assigned https://talosintelligence.com/vulnerability_reports/TALOS-2021-1280 Exploit, Third Party Advisory Added CWE NIST CWE-88 Added CPE Configuration OR *cpe:2.3:a:att:labs\'_xmill:0.7:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-21814 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-2021-21814
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
0.14745
percentile