CVE-2016-9597 Denial of service in libxml2

What is CVE-2016-9597?

CVE-2016-9597 is a high-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 30 Jul 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

It was found that Red Hat JBoss Core Services erratum RHSA-2016:2957 for CVE-2016-3705 did not actually include the fix for the issue found in libxml2, making it vulnerable to a Denial of Service attack due to a Stack Overflow. This is a regression CVE for the same issue as CVE-2016-3705.

Weakness: CWE-119, CWE-674

Which versions are affected by CVE-2016-9597?

It affects 6 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Hp Icewall Federation Agent, Hp Icewall File Manager, Opensuse Leap, Xmlsoft Libxml2.

How do I fix CVE-2016-9597?

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-2016-9597 being exploited?

There is no known exploitation of CVE-2016-9597 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-94gc-v83r-7m7w.