CVE-2018-7644

Description

The XmlSecLibs library as used in the saml2 library in SimpleSAMLphp before 1.15.3 incorrectly verifies signatures on SAML assertions, allowing a remote attacker to construct a crafted SAML assertion on behalf of an Identity Provider that would pass as cryptographically valid, thereby allowing them to impersonate a user from that Identity Provider, aka a key confusion issue.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.07%
Vendor Advisory simplesamlphp.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://simplesamlphp.org/security/201802-01 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-7644?
CVE-2018-7644 has been scored as a high severity vulnerability.
How to fix CVE-2018-7644?
To fix CVE-2018-7644, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-7644 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-7644 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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