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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities
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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

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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/commit/57812a532e5f749c8e18c6f6a652eca65c083607 Patch  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://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

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Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-26276
NVD Published Date:
12/17/2020
NVD Last Modified:
12/18/2020
Source:
GitHub, Inc.