CVE-2020-26276

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Summary

CVECVE-2020-26276
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-12-17 20:15:00 UTC
Updated2020-12-18 19:11:00 UTC
DescriptionFleet 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.

Risk And Classification

Problem Types: CWE-290

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Fleetdm Fleet All All All All
Application Fleetdm Fleet All All All All

References

ReferenceSourceLinkTags
Coordinated disclosure of XML round-trip vulnerabilities in Go library MISC mattermost.com Not Applicable, Third Party Advisory
GitHub - mattermost/xml-roundtrip-validator MISC github.com Third Party Advisory
Merge pull request from GHSA-w3wf-cfx3-6gcx · fleetdm/fleet@57812a5 · GitHub MISC github.com Patch, Third Party Advisory
fleet/CHANGELOG.md at master · fleetdm/fleet · GitHub MISC github.com Release Notes, Third Party Advisory
SAML authentication vulnerability due to stdlib XML parsing · Advisory · fleetdm/fleet · GitHub CONFIRM github.com Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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