PT-2021-15465 · Tyk · Tyk-Identity-Broker

Sredny M · Published 2021-04-26 · Updated 2024-08-21 · CVE-2021-23365

Positive Technologies (AI Summary)

CVSS v3.1

9.1

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions tyk-identity-broker versions prior to 1.1.1

Description The issue is related to Authentication Bypass via the Go XML parser, which can cause SAML authentication bypass. This occurs because the XML parser does not guarantee integrity in the XML round-trip, specifically during the encoding and decoding of XML data.

Recommendations For versions prior to 1.1.1, update to version 1.1.1 or later to resolve the issue. As a temporary workaround, consider restricting the use of SAML authentication until the update is applied.

Fix

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

CVE-2021-23365

GHSA-599H-8WPJ-75XJ

GO-2022-0906

SNYK-GOLANG-GITHUBCOMTYKTECHNOLOGIESTYKIDENTITYBROKER-1089720

Affected Products

Tyk-Identity-Broker

References · 11

• https://github.com/TykTechnologies/tyk-identity-broker/commit/46f70420e0911e4e8b638575e29d394c227c75d0 · Patch
• https://github.com/TykTechnologies/tyk-identity-broker/pull/147 · Patch
• https://github.com/TykTechnologies/tyk-identity-broker/commit/243092965b0f93a95a14cb882b5b9a3df61dd5c0 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-23365 · Security Note
• https://osv.dev/vulnerability/CVE-2021-23365 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-599h-8wpj-75xj · Vendor Advisory
• https://osv.dev/vulnerability/GO-2022-0906 · Vendor Advisory
• https://github.com/TykTechnologies/tyk-identity-broker/releases/tag/v1.1.1 · Note
• https://t.me/cvenotify/13704 · Telegram Post
• https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMTYKTECHNOLOGIESTYKIDENTITYBROKER-1089720 · Note
• https://github.com/advisories/GHSA-599h-8wpj-75xj · Note