CVE-2021-33818
"UniFi Protect G3 FLEX Camera Slow HTTP DoS"
Description
An issue was discovered in UniFi Protect G3 FLEX Camera Version UVC.v4.30.0.67. Attackers can use slowhttptest tool to send incomplete HTTP request, which could make server keep waiting for the packet to finish the connection, until its resource exhausted. Then the web server is denial-of-service.
INFO
Published Date :
June 18, 2021, 7:15 p.m.
Last Modified :
Nov. 21, 2024, 6:09 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2021-33818 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2021-33818
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
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-2021-33818.
| URL | Resource |
|---|---|
| https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33818.md | Exploit Third Party Advisory |
| https://github.com/shekyan/slowhttptest | Third Party Advisory |
| https://store.ui.com/collections/unifi-protect-cameras/products/unifi-video-g3-flex-camera | Product Vendor Advisory |
| https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33818.md | Exploit Third Party Advisory |
| https://github.com/shekyan/slowhttptest | Third Party Advisory |
| https://store.ui.com/collections/unifi-protect-cameras/products/unifi-video-g3-flex-camera | Product 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).
None
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-33818 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-33818 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 af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33818.md Added Reference https://github.com/shekyan/slowhttptest Added Reference https://store.ui.com/collections/unifi-protect-cameras/products/unifi-video-g3-flex-camera -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Jun. 24, 2021
Action Type Old Value New Value Changed CPE Configuration AND OR *cpe:2.3:o:ui:camera_g3_flex_firmware:uvc.v4.30.0.67:*:*:*:*:*:*:* OR cpe:2.3:h:ui:camera_g3_flex_camera:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:ui:camera_g3_flex_firmware:uvc.v4.30.0.67:*:*:*:*:*:*:* OR cpe:2.3:h:ui:camera_g3_flex:-:*:*:*:*:*:*:* -
Initial Analysis by [email protected]
Jun. 24, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33818.md No Types Assigned https://github.com/Jian-Xian/CVE-POC/blob/master/CVE-2021-33818.md Exploit, Third Party Advisory Changed Reference Type https://github.com/shekyan/slowhttptest No Types Assigned https://github.com/shekyan/slowhttptest Third Party Advisory Changed Reference Type https://store.ui.com/collections/unifi-protect-cameras/products/unifi-video-g3-flex-camera No Types Assigned https://store.ui.com/collections/unifi-protect-cameras/products/unifi-video-g3-flex-camera Product, Vendor Advisory Added CWE NIST CWE-400 Added CPE Configuration AND OR *cpe:2.3:o:ui:camera_g3_flex_firmware:uvc.v4.30.0.67:*:*:*:*:*:*:* OR cpe:2.3:h:ui:camera_g3_flex_camera:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-33818 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-2021-33818
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.24 }} 0.03%
score
0.63641
percentile