CVE-2016-5300 Denial of service in n/a

What is CVE-2016-5300?

CVE-2016-5300 is a high-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 16 Jun 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The XML parser in Expat does not use sufficient entropy for hash initialization, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted identifiers in an XML document. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-0876.

Weakness: CWE-399

Which versions are affected by CVE-2016-5300?

It affects 4 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Google Android, Libexpat Project Libexpat.

How do I fix CVE-2016-5300?

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-2016-5300 being exploited?

There is no known exploitation of CVE-2016-5300 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 ALPINE-CVE-2016-5300, DEBIAN-CVE-2016-5300, GHSA-59r7-7hc4-v4rf, UBUNTU-CVE-2016-5300.