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CVE-2020-26290

Critical security issues in XML encoding in Dex

Published: Dec 28, 2020Updated: Nov 21, 2024 Sources: CVE List NVD GHSACWE-347
NVD MITRE
9.3CVSSCRITICAL
EPSS Score
1.0%
Top 42.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Dex is a federated OpenID Connect provider written in Go. In Dex before version 2.27.0 there is a critical set of vulnerabilities which impacts users leveraging the SAML connector. The vulnerabilities enables potential signature bypass due to issues with XML encoding in the underlying Go library. The vulnerabilities have been addressed in version 2.27.0 by using the xml-roundtrip-validator from Mattermost (see related references).

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:CC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-347

Affected Products

dexlinuxfoundation
Mixed
AI / ML / ml-framework
dexdexidp
On-prem
Security Products / identity-access-mgmt
github.com/dexidp/dexGoOSS Libraries
github.com/russellhaering/goxmldsigGoOSS Libraries
linuxfoundationoss-projectUSAI / MLaka yocto, pytorch, everest
dexidpcommercialSecurity Products
gopackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Collection
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References

https://github.com/dexidp/dex/commit/324b1c886b407594196113a3dbddebe38eecd4e8
github.com
https://github.com/dexidp/dex/releases/tag/v2.27.0
github.com
https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5
github.com
and 9 more references View all →

Timeline

Published
Dec 28, 2020
Last Updated
Nov 21, 2024

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