CVE-2014-0012 Insecure Temporary File in Jinja2

Medium 4.4 Published Updated

Local attackers can escalate privileges by pre-creating temporary directories due to improper handling in the Jinja2 FileSystemBytecodeCache.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
Not needed
Fix
Available

What is CVE-2014-0012?

CVE-2014-0012 is a medium-severity vulnerability in n/a, published on 19 May 2014. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

FileSystemBytecodeCache in Jinja2 2.7.2 does not properly create temporary directories, which allows local users to gain privileges by pre-creating a temporary directory with a user's uid. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-1402.

Weakness: CWE-264

Which versions are affected by CVE-2014-0012?

3 open source packages ship an affected version, including jinja2 and Jinja2. It affects 1 product.

PackageAffectedFixed in
jinja2 PyPIAll versions2.7.2
jinja2 PyPIAll versions2.7.3
Jinja2 PyPIAll versions2.7.2
Linux distribution packages (4)
python-Jinja2 SUSE:Cloud Compute Node for SUSE Linux Enterprise 12 5All versions2.7.3-4.1
python-Jinja2 SUSE:Enterprise Storage 1.0All versions2.7.3-4.1
python-Jinja2 SUSE:Package Hub 12All versions2.8-2.1
python-Jinja2 openSUSE:TumbleweedAll versions2.8-1.4

Products include Pocoo Jinja2.

How do I fix CVE-2014-0012?

Upgrade jinja2 to a fixed version for your release line: 2.7.2 or 2.7.3.

Is CVE-2014-0012 being exploited?

There is no known exploitation of CVE-2014-0012 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2014-0012, GHSA-fqh9-2qgg-h84h, PYSEC-2014-82, SUSE-SU-2015:1336-1, openSUSE-SU-2019:0244-1, openSUSE-SU-2024:10129-1.

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