CVE-2016-4449 XML external entity in n/a

What is CVE-2016-4449?

CVE-2016-4449 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 9 Jun 2016. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

XML external entity (XXE) vulnerability in the xmlStringLenDecodeEntities function in parser.c in libxml2 before 2.9.4, when not in validating mode, allows context-dependent attackers to read arbitrary files or cause a denial of service (resource consumption) via unspecified vectors.

Weakness: CWE-20

Which versions are affected by CVE-2016-4449?

It affects 3 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Xmlsoft Libxml2.

How do I fix CVE-2016-4449?

Upgrade to a fixed version.

Is CVE-2016-4449 being exploited?

There is no known exploitation of CVE-2016-4449 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 DEBIAN-CVE-2016-4449, ECHO-9e53-9686-8b76, GHSA-r3pg-4m7c-9pvw, UBUNTU-CVE-2016-4449.