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CVE-2021-23365

CRITICALCVSS 9.1/10EPSS 1.01%

Last modified

CVE-2021-23365 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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).. EPSS estimates a 1.01% chance of exploitation in the next 30 days.

Description

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).

Metrics

CVSS 3.1
9.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS Probability
1.01%

58.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
TykTyk-Identity-Broker< 1.1.1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-23365?
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).
How severe is CVE-2021-23365?
CVE-2021-23365 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 1.01% probability of exploitation in the next 30 days.
How do I fix CVE-2021-23365?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-23365?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST