CVE-2017-7509 Denial of service in Certificate System
Attackers can cause a denial of service in Red Hat Certificate System by submitting certificates with missing certreq fields, triggering an assertion error.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2017-7509?
CVE-2017-7509 is a low-severity denial of service vulnerability in Red Hat Certificate System, published on 26 Jul 2018. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-20
Which versions are affected by CVE-2017-7509?
It affects 1 product.
Linux distribution packages (9)
pki-ca Red Hat:certificate_system:8::el5 | All versions | 0:8.1.9-2.el5pki |
pki-common Red Hat:certificate_system:8::el5 | All versions | 0:8.1.20-1.el5pki |
pki-common-javadoc Red Hat:certificate_system:8::el5 | All versions | 0:8.1.20-1.el5pki |
pki-kra Red Hat:certificate_system:8::el5 | All versions | 0:8.1.7-2.el5pki |
pki-silent Red Hat:certificate_system:8::el5 | All versions | 0:8.1.2-3.el5pki |
pki-tps Red Hat:certificate_system:8::el5 | All versions | 0:8.1.30-1.el5pki |
pki-util Red Hat:certificate_system:8::el5 | All versions | 0:8.1.3-2.el5pki |
pki-util-javadoc Red Hat:certificate_system:8::el5 | All versions | 0:8.1.3-2.el5pki |
redhat-pki-ca-ui Red Hat:certificate_system:8::el5 | All versions | 0:8.1.1-2.el5pki |
Products include Redhat Certificate System.
How do I fix CVE-2017-7509?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2017-7509 being exploited?
There is no known exploitation of CVE-2017-7509 in the wild and no public exploit code.
Other vulnerabilities in Red Hat Certificate System
Sources
Also known as GHSA-2v3w-p5pg-rgxq, RHSA-2017:2560.