CVE-2017-7509

Severity: medium (CVSS 6.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-07-26 · updated 2026-06-17
Weakness: CWE-20

Description

An input validation error was found in Red Hat Certificate System's handling of client provided certificates before 8.1.20-1. If the certreq field is not present in a certificate an assertion error is triggered causing a denial of service.

Affected products

Red Hat Certificate System: before 8.1.20-1 — fixed in 8.1.20-1

How to fix

Upgrade to a fixed version: Red Hat Certificate System 8.1.20-1. Check the vendor advisory for mitigations.

References

http://www.securitytracker.com/id/1039248
https://access.redhat.com/errata/RHSA-2017:2560
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7509
http://www.securitytracker.com/id/1039248
https://access.redhat.com/errata/RHSA-2017:2560
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7509

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