CVE-2020-15135
Save-Server CSRF Authorization Bypass
Description
save-server (npm package) before version 1.05 is affected by a CSRF vulnerability, as there is no CSRF mitigation (Tokens etc.). The fix introduced in version version 1.05 unintentionally breaks uploading so version v1.0.7 is the fixed version. This is patched by implementing Double submit. The CSRF attack would require you to navigate to a malicious site while you have an active session with Save-Server (Session key stored in cookies). The malicious user would then be able to perform some actions, including uploading/deleting files and adding redirects. If you are logged in as root, this attack is significantly more severe. They can in addition create, delete and update users. If they updated the password of a user, that user's files would then be available. If the root password is updated, all files would be visible if they logged in with the new password. Note that due to the same origin policy malicious actors cannot view the gallery or the response of any of the methods, nor be sure they succeeded. This issue has been patched in version 1.0.7.
INFO
Published Date :
Aug. 4, 2020, 9:15 p.m.
Last Modified :
Nov. 21, 2024, 5:04 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.5
Exploitability Score :
2.1
Public PoC/Exploit Available at Github
CVE-2020-15135 has a 1 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-2020-15135.
| URL | Resource |
|---|---|
| https://github.com/Neztore/save-server/security/advisories/GHSA-wwrj-35w6-77ff | Third Party Advisory |
| https://medium.com/cross-site-request-forgery-csrf/double-submit-cookie-pattern-65bb71d80d9f | Exploit Third Party Advisory |
| https://www.npmjs.com/package/save-server | Product Third Party Advisory |
| https://github.com/Neztore/save-server/security/advisories/GHSA-wwrj-35w6-77ff | Third Party Advisory |
| https://medium.com/cross-site-request-forgery-csrf/double-submit-cookie-pattern-65bb71d80d9f | Exploit Third Party Advisory |
| https://www.npmjs.com/package/save-server | Product 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).
None
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The following list is the news that have been mention
CVE-2020-15135 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-15135 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/Neztore/save-server/security/advisories/GHSA-wwrj-35w6-77ff Added Reference https://medium.com/cross-site-request-forgery-csrf/double-submit-cookie-pattern-65bb71d80d9f Added Reference https://www.npmjs.com/package/save-server -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Aug. 10, 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:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L Changed Reference Type https://github.com/Neztore/save-server/security/advisories/GHSA-wwrj-35w6-77ff No Types Assigned https://github.com/Neztore/save-server/security/advisories/GHSA-wwrj-35w6-77ff Third Party Advisory Changed Reference Type https://medium.com/cross-site-request-forgery-csrf/double-submit-cookie-pattern-65bb71d80d9f No Types Assigned https://medium.com/cross-site-request-forgery-csrf/double-submit-cookie-pattern-65bb71d80d9f Exploit, Third Party Advisory Changed Reference Type https://www.npmjs.com/package/save-server No Types Assigned https://www.npmjs.com/package/save-server Product, Third Party Advisory Added CWE NIST CWE-352 Added CPE Configuration OR *cpe:2.3:a:save-server_project:save-server:*:*:*:*:*:node.js:*:* versions up to (excluding) 1.0.5
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-15135 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-2020-15135
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.12 }} 0.08%
score
0.32587
percentile