U.S. flag   An official website of the United States government
Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock (Dot gov) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2020-26276 Detail

Description

Fleet is an open source osquery manager. In Fleet before version 3.5.1, due to issues in Go's standard library XML parsing, a valid SAML response may be mutated by an attacker to modify the trusted document. This can result in allowing unverified logins from a SAML IdP. Users that configure Fleet with SSO login may be vulnerable to this issue. This issue is patched in 3.5.1. The fix was made using https://github.com/mattermost/xml-roundtrip-validator If upgrade to 3.5.1 is not possible, users should disable SSO authentication in Fleet.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

Hyperlink Resource
https://github.com/fleetdm/fleet/blob/master/CHANGELOG.md#fleet-351-dec-14-2020 Release Notes  Third Party Advisory 
https://github.com/fleetdm/fleet/blob/master/CHANGELOG.md#fleet-351-dec-14-2020 Release Notes  Third Party Advisory 
https://github.com/fleetdm/fleet/commit/57812a532e5f749c8e18c6f6a652eca65c083607 Patch  Third Party Advisory 
https://github.com/fleetdm/fleet/commit/57812a532e5f749c8e18c6f6a652eca65c083607 Patch  Third Party Advisory 
https://github.com/fleetdm/fleet/security/advisories/GHSA-w3wf-cfx3-6gcx Third Party Advisory 
https://github.com/fleetdm/fleet/security/advisories/GHSA-w3wf-cfx3-6gcx Third Party Advisory 
https://github.com/mattermost/xml-roundtrip-validator Third Party Advisory 
https://github.com/mattermost/xml-roundtrip-validator Third Party Advisory 
https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities Not Applicable  Third Party Advisory 
https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities Not Applicable  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-290 Authentication Bypass by Spoofing cwe source acceptance level NIST   GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

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-2020-26276
NVD Published Date:
12/17/2020
NVD Last Modified:
11/21/2024
Source:
GitHub, Inc.