CVE-2020-8293
Nextcloud Server Unvalidated Input Storage vulnerabilty
Description
A missing input validation in Nextcloud Server before 20.0.2, 19.0.5, 18.0.11 allows users to store unlimited data in workflow rules causing load and potential DDoS on later interactions and usage with those rules.
INFO
Published Date :
Jan. 26, 2021, 6:16 p.m.
Last Modified :
Sept. 27, 2022, 3:46 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
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-2020-8293.
| URL | Resource |
|---|---|
| https://hackerone.com/reports/1018146 | Third Party Advisory |
| https://nextcloud.com/security/advisory/?id=NC-SA-2021-001 | Broken Link 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-2020-8293 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-8293 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 -
Reanalysis by [email protected]
Sep. 27, 2022
Action Type Old Value New Value Changed Reference Type https://nextcloud.com/security/advisory/?id=NC-SA-2021-001 Vendor Advisory https://nextcloud.com/security/advisory/?id=NC-SA-2021-001 Broken Link, Vendor Advisory Changed CPE Configuration OR *cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:*:*:*:* versions up to (excluding) 18.0.11 *cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* versions from (including) 19.0.0 up to (excluding) 19.0.5 *cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* versions from (including) 20.0.0 up to (excluding) 20.0.2 OR *cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* versions up to (excluding) 18.0.11 *cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* versions from (including) 19.0.0 up to (excluding) 19.0.5 *cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* versions from (including) 20.0.0 up to (excluding) 20.0.2 -
CPE Deprecation Remap by [email protected]
Sep. 27, 2022
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:*:*:*:* versions from (including) 19.0.0 from (excluding) 19.0.5 OR *cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* versions from (including) 19.0.0 from (excluding) 19.0.5 -
CPE Deprecation Remap by [email protected]
Sep. 27, 2022
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:*:*:*:* versions from (including) 20.0.0 from (excluding) 20.0.2 OR *cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* versions from (including) 20.0.0 from (excluding) 20.0.2 -
Initial Analysis by [email protected]
Feb. 02, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://hackerone.com/reports/1018146 No Types Assigned https://hackerone.com/reports/1018146 Third Party Advisory Changed Reference Type https://nextcloud.com/security/advisory/?id=NC-SA-2021-001 No Types Assigned https://nextcloud.com/security/advisory/?id=NC-SA-2021-001 Vendor Advisory Added CWE NIST CWE-400 Added CPE Configuration OR *cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:*:*:*:* versions up to (excluding) 18.0.11 *cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:*:*:*:* versions from (including) 19.0.0 up to (excluding) 19.0.5 *cpe:2.3:a:nextcloud:nextcloud:*:*:*:*:*:*:*:* versions from (including) 20.0.0 up to (excluding) 20.0.2
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-8293 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-2020-8293
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.08 }} 0.00%
score
0.33067
percentile