CVE-2021-32660
Backstage TechDocs Common Unrestricted File Upload Vulnerability
Description
Backstage is an open platform for building developer portals, and techdocs-common contains common functionalities for Backstage's TechDocs. In versions of `@backstage/tehdocs-common` prior to 0.6.4, a malicious internal actor is able to upload documentation content with malicious scripts. These scripts would normally be sanitized by the TechDocs frontend, but by tricking a user to visit the content via the TechDocs API, the content sanitazion will be bypassed. If the TechDocs API is hosted on the same origin as the Backstage app or other backend plugins, this may give access to sensitive data. The ability to upload malicious content may be limited by internal code review processes, unless the chosen TechDocs deployment method is to use an object store and the actor has access to upload files directly to that store. The vulnerability is patched in the `0.6.4` release of `@backstage/techdocs-common`.
INFO
Published Date :
June 3, 2021, 5:15 p.m.
Last Modified :
June 21, 2021, 2:56 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.2
Exploitability Score :
2.8
Affected Products
The following products are affected by CVE-2021-32660
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-2021-32660.
| URL | Resource |
|---|---|
| https://github.com/backstage/backstage/commit/aad98c544e59369901fe9e0a85f6357644dceb5c | Patch Third Party Advisory |
| https://github.com/backstage/backstage/releases/tag/release-2021-06-03 | Patch Third Party Advisory |
| https://github.com/backstage/backstage/security/advisories/GHSA-pwhf-39xg-4rxw | 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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-32660 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-32660 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]
Jun. 21, 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:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Changed Reference Type https://github.com/backstage/backstage/commit/aad98c544e59369901fe9e0a85f6357644dceb5c No Types Assigned https://github.com/backstage/backstage/commit/aad98c544e59369901fe9e0a85f6357644dceb5c Patch, Third Party Advisory Changed Reference Type https://github.com/backstage/backstage/releases/tag/release-2021-06-03 No Types Assigned https://github.com/backstage/backstage/releases/tag/release-2021-06-03 Patch, Third Party Advisory Changed Reference Type https://github.com/backstage/backstage/security/advisories/GHSA-pwhf-39xg-4rxw No Types Assigned https://github.com/backstage/backstage/security/advisories/GHSA-pwhf-39xg-4rxw Third Party Advisory Added CWE NIST CWE-434 Added CPE Configuration OR *cpe:2.3:a:linuxfoundation:\@backstage\/techdocs-common:*:*:*:*:*:node.js:*:* versions up to (excluding) 0.6.4
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-32660 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-2021-32660
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.15 }} 0.06%
score
0.50241
percentile