CVE-2018-7711
simplesamlphp - security update
8.1
HIGH
CVSS 3.1
EPSS 0.32%
Description
HTTPRedirect.php in the saml2 library in SimpleSAMLphp before 1.15.4 has an incorrect check of return values in the signature validation utilities, allowing an attacker to get invalid signatures accepted as valid by forcing an error during validation. This occurs because of a dependency on PHP functionality that interprets a -1 error code as a true boolean value.
How to fix CVE-2018-7711
To remediate CVE-2018-7711, upgrade the affected package to a fixed version below.
- —upgrade to 1.15.4-1 or later
- —upgrade to 1.9.2-1+deb7u4 or later
- —upgrade to 1.10.6 or later
Is CVE-2018-7711 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 1.15.4-1
- from 0, < 1.9.2-1+deb7u4
- from 0, < 1.10.6
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |