CVE-2020-8289
Backblaze WebDAV Certificate Validation Vulnerability
Description
Backblaze for Windows before 7.0.1.433 and Backblaze for macOS before 7.0.1.434 suffer from improper certificate validation in `bztransmit` helper due to hardcoded whitelist of strings in URLs where validation is disabled leading to possible remote code execution via client update functionality.
INFO
Published Date :
Dec. 27, 2020, 2:15 a.m.
Last Modified :
Dec. 31, 2020, 7:04 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2020-8289 has a 6 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-2020-8289.
| URL | Resource |
|---|---|
| http://seclists.org/fulldisclosure/2020/Dec/57 | Mailing List Third Party Advisory |
| http://seclists.org/fulldisclosure/2020/Dec/58 | Mailing List Third Party Advisory |
| https://github.com/geffner/CVE-2020-8289/blob/master/README.md | Exploit Third Party Advisory |
| https://hackerone.com/reports/818853 | Permissions Required |
| https://www.backblaze.com/blog/backblaze-cloud-backup-release-7-0-1/ | Third Party Advisory |
| https://youtu.be/W0THXbcX5V8 | 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).
A curated list of my GitHub stars! Generated by starred
None
None
None
None
CVE-2020-8289 – Remote Code Execution as SYSTEM/root via Backblaze
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-8289 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-8289 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 -
Initial Analysis by [email protected]
Dec. 31, 2020
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:C/I:C/A:C) Added CVSS V3.1 NIST AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Changed Reference Type http://seclists.org/fulldisclosure/2020/Dec/57 No Types Assigned http://seclists.org/fulldisclosure/2020/Dec/57 Mailing List, Third Party Advisory Changed Reference Type http://seclists.org/fulldisclosure/2020/Dec/58 No Types Assigned http://seclists.org/fulldisclosure/2020/Dec/58 Mailing List, Third Party Advisory Changed Reference Type https://github.com/geffner/CVE-2020-8289/blob/master/README.md No Types Assigned https://github.com/geffner/CVE-2020-8289/blob/master/README.md Exploit, Third Party Advisory Changed Reference Type https://hackerone.com/reports/818853 No Types Assigned https://hackerone.com/reports/818853 Permissions Required Changed Reference Type https://www.backblaze.com/blog/backblaze-cloud-backup-release-7-0-1/ No Types Assigned https://www.backblaze.com/blog/backblaze-cloud-backup-release-7-0-1/ Third Party Advisory Changed Reference Type https://youtu.be/W0THXbcX5V8 No Types Assigned https://youtu.be/W0THXbcX5V8 Exploit, Third Party Advisory Added CWE NIST CWE-295 Added CPE Configuration OR *cpe:2.3:a:backblaze:backblaze:*:*:*:*:*:windows:*:* versions up to (excluding) 7.0.1.433 *cpe:2.3:a:backblaze:backblaze:*:*:*:*:*:macos:*:* versions up to (excluding) 7.0.1.434 -
CVE Modified by [email protected]
Dec. 29, 2020
Action Type Old Value New Value Added Reference http://seclists.org/fulldisclosure/2020/Dec/58 [No Types Assigned] Added Reference http://seclists.org/fulldisclosure/2020/Dec/57 [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-2020-8289 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-2020-8289
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
1.21 }} 0.26%
score
0.85607
percentile