CVE-2017-7500 Path traversal in rpm

High 7.3 Published Updated

An attacker with write access to a directory can exploit symbolic link handling in RPM to redirect installations, gaining root privileges and modifying arbitrary files.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
A user has to click or open something
Fix
Available

What is CVE-2017-7500?

CVE-2017-7500 is a high-severity path traversal vulnerability in [UNKNOWN] rpm, published on 13 Aug 2018. 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

It was found that rpm did not properly handle RPM installations when a destination path was a symbolic link to a directory, possibly changing ownership and permissions of an arbitrary directory, and RPM files being placed in an arbitrary destination. An attacker, with write access to a directory in which a subdirectory will be installed, could redirect that directory to an arbitrary location and gain root privilege.

Weakness: CWE-59

Which versions are affected by CVE-2017-7500?

It affects 1 product.

Linux distribution packages (3)
python-rpm SUSE:Linux Enterprise Module for Basesystem 15All versions4.14.1-10.3.1
rpm SUSE:Linux Enterprise Module for Basesystem 15All versions4.14.1-10.3.1
rpm SUSE:Linux Enterprise Module for Development Tools 15All versions4.14.1-10.3.1

Products include Rpm Rpm.

How do I fix CVE-2017-7500?

Apply the vendor's patch.

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

Is CVE-2017-7500 being exploited?

There is no known exploitation of CVE-2017-7500 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2017-7500, ECHO-9cd3-7dc0-fcc1, GHSA-2jc3-8rq8-7x2x, SUSE-SU-2018:2073-1, UBUNTU-CVE-2017-7500.

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