CVE-2019-10201

HIGHCVSS 8.1/10EPSS 0.71%

Last modified

CVE-2019-10201 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. It was found that Keycloak's SAML broker, versions up to 6.0.1, did not verify missing message signatures. If an attacker modifies the SAML Response and removes the <Signature> sections, the message is still accepted, and the message can be modified. EPSS estimates a 0.71% chance of exploitation in the next 30 days.

Description

It was found that Keycloak's SAML broker, versions up to 6.0.1, did not verify missing message signatures. If an attacker modifies the SAML Response and removes the <Signature> sections, the message is still accepted, and the message can be modified. An attacker could use this flaw to impersonate other users and gain access to sensitive information.

Metrics

CVSS 3.1
8.1/10

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

EPSS Probability
0.71%

49.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
RedhatKeycloak<= 6.0.1
RedhatSingle Sign-On7.0
RedhatSingle Sign-On7.3.3

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-10201?
It was found that Keycloak's SAML broker, versions up to 6.0.1, did not verify missing message signatures. If an attacker modifies the SAML Response and removes the <Signature> sections, the message is still accepted, and the message can be modified. An attacker could use this flaw to impersonate other users and gain access to sensitive information.
How severe is CVE-2019-10201?
CVE-2019-10201 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.71% probability of exploitation in the next 30 days.
How do I fix CVE-2019-10201?
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-2019-10201?

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

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Source: NVD / NIST