CVE-2021-23365 : The package github.com/tyktechnologies/tyk-identity-broker before 1.1.1 are vuln

The package github.com/tyktechnologies/tyk-identity-broker before 1.1.1 are vulnerable to Authentication Bypass via the Go XML parser which can cause SAML authentication bypass. This is because the XML parser doesn’t guarantee integrity in the XML round-trip (encoding/decoding XML data).

Published 2021-04-26 10:15:13

Updated 2021-05-19 13:00:46

Source Snyk

View at NVD, CVE.org

Vulnerability category: BypassGain privilege

Products affected by CVE-2021-23365

TYK » Tyk-identity-broker
Versions before (<) 1.1.1
cpe:2.3:a:tyk:tyk-identity-broker:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2021-23365

EPSS FAQ

0.37%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 56 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-23365

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.5	MEDIUM	AV:N/AC:L/Au:S/C:P/I:P/A:N	8.0	4.9	NIST
Access Vector: Network Access Complexity: Low Authentication: Single Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: None
9.1	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N	3.9	5.2	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: None
4.8	MEDIUM	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N	2.2	2.5	Snyk
Attack Vector: Network Attack Complexity: High Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: Low Integrity: Low Availability: None

CWE ids for CVE-2021-23365

CWE-287 Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-23365

https://github.com/TykTechnologies/tyk-identity-broker/commit/46f70420e0911e4e8b638575e29d394c227c75d0

Merge pull request #147 from TykTechnologies/fix/saml-vuln-and-broken… · TykTechnologies/tyk-identity-broker@46f7042 · GitHub
Patch;Third Party Advisory
https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMTYKTECHNOLOGIESTYKIDENTITYBROKER-1089720

Authentication Bypass in github.com/tyktechnologies/tyk-identity-broker | Snyk
Third Party Advisory
https://github.com/TykTechnologies/tyk-identity-broker/releases/tag/v1.1.1

Release v1.1.1 · TykTechnologies/tyk-identity-broker · GitHub
Release Notes;Third Party Advisory
https://github.com/TykTechnologies/tyk-identity-broker/commit/243092965b0f93a95a14cb882b5b9a3df61dd5c0

Merge branch 'master' into fix/saml-vuln-and-broken-tests · TykTechnologies/tyk-identity-broker@2430929 · GitHub
Patch;Third Party Advisory
https://github.com/TykTechnologies/tyk-identity-broker/pull/147

TT-1322-Fix SAML vuln and broken tests by jlucktay · Pull Request #147 · TykTechnologies/tyk-identity-broker · GitHub
Patch;Third Party Advisory

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Vulnerability Details : CVE-2021-23365

Products affected by CVE-2021-23365

Exploit prediction scoring system (EPSS) score for CVE-2021-23365

CVSS scores for CVE-2021-23365

CWE ids for CVE-2021-23365

References for CVE-2021-23365