CVE-2014-1933 Pillow Temporary file name leakage

Low 2.1 Published Updated

Local attackers can exploit predictable temporary file names in PIL to perform symlink attacks, potentially reading or modifying arbitrary files.

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-2014-1933?

CVE-2014-1933 is a low-severity path traversal vulnerability in Python Pillow, published on 17 Apr 2014. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The (1) JpegImagePlugin.py and (2) EpsImagePlugin.py scripts in Python Image Library (PIL) 1.1.7 and earlier and Pillow before 2.3.1 uses the names of temporary files on the command line, which makes it easier for local users to conduct symlink attacks by listing the processes.

Weakness: CWE-264

Which versions are affected by CVE-2014-1933?

3 open source packages ship an affected version, including pillow. It affects 2 products.

PackageAffectedFixed in
pillow PyPIAll versions2.3.1
pillow PyPIAll versions2.3.1
pillow PyPIAll versions2.3.1

Products include Python Pillow, Pythonware Python Imaging Library.

How do I fix CVE-2014-1933?

Upgrade pillow to 2.3.1 or later.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2014-1933 being exploited?

There is no known exploitation of CVE-2014-1933 in the wild and no public exploit code.

All Python Pillow vulnerabilities

Sources

Also known as DEBIAN-CVE-2014-1933, GHSA-r854-96gq-rfg3, PYSEC-2014-23.

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