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Vulnerability Details :

CVE-2020-26276

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-17 Dec, 2020 | 19:40
Updated At-04 Aug, 2024 | 15:56
Rejected At-
Credits

SAML authentication vulnerability in Fleet

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:17 Dec, 2020 | 19:40
Updated At:04 Aug, 2024 | 15:56
Rejected At:
▼CVE Numbering Authority (CNA)
SAML authentication vulnerability in Fleet

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.

Affected Products
Vendor
fleetdm
Product
fleet
Versions
Affected
  • < 3.5.1
Problem Types
TypeCWE IDDescription
CWECWE-290CWE-290: Authentication Bypass by Spoofing
Type: CWE
CWE ID: CWE-290
Description: CWE-290: Authentication Bypass by Spoofing
Metrics
VersionBase scoreBase severityVector
3.110.0CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Version: 3.1
Base score: 10.0
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/fleetdm/fleet/security/advisories/GHSA-w3wf-cfx3-6gcx
x_refsource_CONFIRM
https://github.com/fleetdm/fleet/commit/57812a532e5f749c8e18c6f6a652eca65c083607
x_refsource_MISC
https://github.com/fleetdm/fleet/blob/master/CHANGELOG.md#fleet-351-dec-14-2020
x_refsource_MISC
https://github.com/mattermost/xml-roundtrip-validator
x_refsource_MISC
https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities
x_refsource_MISC
Hyperlink: https://github.com/fleetdm/fleet/security/advisories/GHSA-w3wf-cfx3-6gcx
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/fleetdm/fleet/commit/57812a532e5f749c8e18c6f6a652eca65c083607
Resource:
x_refsource_MISC
Hyperlink: https://github.com/fleetdm/fleet/blob/master/CHANGELOG.md#fleet-351-dec-14-2020
Resource:
x_refsource_MISC
Hyperlink: https://github.com/mattermost/xml-roundtrip-validator
Resource:
x_refsource_MISC
Hyperlink: https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/fleetdm/fleet/security/advisories/GHSA-w3wf-cfx3-6gcx
x_refsource_CONFIRM
x_transferred
https://github.com/fleetdm/fleet/commit/57812a532e5f749c8e18c6f6a652eca65c083607
x_refsource_MISC
x_transferred
https://github.com/fleetdm/fleet/blob/master/CHANGELOG.md#fleet-351-dec-14-2020
x_refsource_MISC
x_transferred
https://github.com/mattermost/xml-roundtrip-validator
x_refsource_MISC
x_transferred
https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities
x_refsource_MISC
x_transferred
Hyperlink: https://github.com/fleetdm/fleet/security/advisories/GHSA-w3wf-cfx3-6gcx
Resource:
x_refsource_CONFIRM
x_transferred
Hyperlink: https://github.com/fleetdm/fleet/commit/57812a532e5f749c8e18c6f6a652eca65c083607
Resource:
x_refsource_MISC
x_transferred
Hyperlink: https://github.com/fleetdm/fleet/blob/master/CHANGELOG.md#fleet-351-dec-14-2020
Resource:
x_refsource_MISC
x_transferred
Hyperlink: https://github.com/mattermost/xml-roundtrip-validator
Resource:
x_refsource_MISC
x_transferred
Hyperlink: https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities
Resource:
x_refsource_MISC
x_transferred
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:17 Dec, 2020 | 20:15
Updated At:18 Dec, 2020 | 19:11

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Secondary3.110.0CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Primary2.06.8MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P
Type: Primary
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Type: Secondary
Version: 3.1
Base score: 10.0
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Type: Primary
Version: 2.0
Base score: 6.8
Base severity: MEDIUM
Vector:
AV:N/AC:M/Au:N/C:P/I:P/A:P
CPE Matches

fleetdm
fleetdm
>>fleet>>Versions before 3.5.1(exclusive)
cpe:2.3:a:fleetdm:fleet:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-290Primarynvd@nist.gov
CWE-290Secondarysecurity-advisories@github.com
CWE ID: CWE-290
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-290
Type: Secondary
Source: security-advisories@github.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://github.com/fleetdm/fleet/blob/master/CHANGELOG.md#fleet-351-dec-14-2020security-advisories@github.com
Release Notes
Third Party Advisory
https://github.com/fleetdm/fleet/commit/57812a532e5f749c8e18c6f6a652eca65c083607security-advisories@github.com
Patch
Third Party Advisory
https://github.com/fleetdm/fleet/security/advisories/GHSA-w3wf-cfx3-6gcxsecurity-advisories@github.com
Third Party Advisory
https://github.com/mattermost/xml-roundtrip-validatorsecurity-advisories@github.com
Third Party Advisory
https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilitiessecurity-advisories@github.com
Not Applicable
Third Party Advisory
Hyperlink: https://github.com/fleetdm/fleet/blob/master/CHANGELOG.md#fleet-351-dec-14-2020
Source: security-advisories@github.com
Resource:
Release Notes
Third Party Advisory
Hyperlink: https://github.com/fleetdm/fleet/commit/57812a532e5f749c8e18c6f6a652eca65c083607
Source: security-advisories@github.com
Resource:
Patch
Third Party Advisory
Hyperlink: https://github.com/fleetdm/fleet/security/advisories/GHSA-w3wf-cfx3-6gcx
Source: security-advisories@github.com
Resource:
Third Party Advisory
Hyperlink: https://github.com/mattermost/xml-roundtrip-validator
Source: security-advisories@github.com
Resource:
Third Party Advisory
Hyperlink: https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities
Source: security-advisories@github.com
Resource:
Not Applicable
Third Party Advisory

Change History

0
Information is not available yet

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