CVE-2016-5013 Moodle Does Not Escape Characters In Email Headers

Medium 5.4 Published Updated

Attackers can inject text into email headers in Moodle, potentially enabling outbound spam campaigns.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
Available

What is CVE-2016-5013?

CVE-2016-5013 is a medium-severity vulnerability in Moodle Moodle, published on 20 Jan 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

In Moodle 2.x and 3.x, text injection can occur in email headers, potentially leading to outbound spam.

Weakness: CWE-74

Which versions are affected by CVE-2016-5013?

10 open source packages ship an affected version, including moodle/moodle. It affects 1 product.

PackageAffectedFixed in
moodle/moodle PackagistFrom 2.72.7.15
moodle/moodle PackagistFrom 2.72.7.15
moodle/moodle PackagistFrom 2.8 to 2.8.12None
moodle/moodle PackagistFrom 2.8 to 2.8.12None
moodle/moodle PackagistFrom 2.92.9.7
moodle/moodle PackagistFrom 2.92.9.7
4 more packages
moodle/moodle PackagistFrom 3.03.0.5
moodle/moodle PackagistFrom 3.03.0.5
moodle/moodle PackagistFrom 3.13.1.1
moodle/moodle PackagistFrom 3.13.1.1

Products include Moodle Moodle.

How do I fix CVE-2016-5013?

Upgrade moodle/moodle to a fixed version for your release line: 2.7.15, 2.9.7, 3.0.5 or 3.1.1.

Is CVE-2016-5013 being exploited?

There is no known exploitation of CVE-2016-5013 in the wild and no public exploit code.

All Moodle Moodle vulnerabilities

Sources

Also known as GHSA-2hh3-jmv8-5fmx, UBUNTU-CVE-2016-5013.

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