CVE-2021-30666
Apple iOS Buffer Overflow Vulnerability - [Actively Exploited]
Description
A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 12.5.3. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..
INFO
Published Date :
Sept. 8, 2021, 3:15 p.m.
Last Modified :
May 16, 2024, 1 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
2.8
CISA KEV (Known Exploited Vulnerabilities)
For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.
Apple iOS WebKit contains a buffer-overflow vulnerability which may allow for code execution when processing maliciously crafted web content.
Apply updates per vendor instructions.
Public PoC/Exploit Available at Github
CVE-2021-30666 has a 4 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2021-30666.
| URL | Resource |
|---|---|
| https://support.apple.com/en-us/HT212341 | Release Notes 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).
leverages inthewilddb (github) to check cve(s) that have active "in the wild" exploit attempts
Python
Batch file to simplify running https://github.com/gmatuz/inthewilddb
Batchfile
Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.
cisa-kev vulnerability 0day cisa exploits
Hourly updated database of exploit and exploitation reports
cve vulnerabilities exploit pentesting vulnerability-scanners hacking cve-poc security-tools vulnerability-management exploitation blueteam
Dockerfile Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-30666 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-30666 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.
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CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725
May. 16, 2024
Action Type Old Value New Value Changed Vulnerability Name Apple iOS Buffer Overflow Vulnerability Apple iOS WebKit Buffer Overflow Vulnerability -
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-120 CWE-119 -
Initial Analysis by [email protected]
Sep. 16, 2021
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Changed Reference Type https://support.apple.com/en-us/HT212341 No Types Assigned https://support.apple.com/en-us/HT212341 Release Notes, Vendor Advisory Added CWE NIST CWE-120 Added CPE Configuration OR *cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* versions up to (excluding) 12.5.3
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-30666 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-2021-30666
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.55 }} 0.03%
score
0.77763
percentile