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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-39195 Detail

Description

Misskey is an open source, decentralized microblogging platform. In affected versions a Server-Side Request Forgery vulnerability exists in "Upload from URL" and remote attachment handling. This could result in the disclosure of non-public information within the internal network. This has been fixed in 12.90.0. However, if you are using a proxy, you will need to take additional measures. As a workaround this exploit may be avoided by appropriately restricting access to private networks from the host where the application is running.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 3.x Severity and Vector Strings:

NIST CVSS score
NIST: NVD
Base Score:  6.5 MEDIUM
Vector:  CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Nist CVSS score does not match with CNA score
CNA:  GitHub, Inc.
Base Score:  7.7 HIGH
Vector:  CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/misskey-dev/misskey/blob/develop/CHANGELOG.md#12900-20210904 Release Notes  Third Party Advisory 
https://github.com/misskey-dev/misskey/blob/develop/CHANGELOG.md#12900-20210904 Release Notes  Third Party Advisory 
https://github.com/misskey-dev/misskey/commit/e1a8b158e04ad567d92d8daf3cc0898ee18f1a2e Patch  Third Party Advisory 
https://github.com/misskey-dev/misskey/commit/e1a8b158e04ad567d92d8daf3cc0898ee18f1a2e Patch  Third Party Advisory 
https://github.com/misskey-dev/misskey/security/advisories/GHSA-mqv7-gxh4-r5vf Issue Tracking  Patch  Third Party Advisory 
https://github.com/misskey-dev/misskey/security/advisories/GHSA-mqv7-gxh4-r5vf Issue Tracking  Patch  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-918 Server-Side Request Forgery (SSRF) GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:misskey:misskey:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		Up to (excluding)
12.90.0

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-39195
NVD Published Date:
09/07/2021
NVD Last Modified:
11/21/2024
Source:
GitHub, Inc.