USN-3506-2: rsync vulnerabilities

7 December 2017

rsync vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 12.04 ESM

Summary

Several security issues were fixed in rsync.

Software Description

  • rsync - fast, versatile, remote (and local) file-copying tool

Details

USN-3506-1 fixed two vulnerabilities in rsync. This update provides the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

It was discovered that rsync proceeds with certain file metadata updates before checking for a filename. An attacker could use this to bypass access restrictions. (CVE-2017-17433)

It was discovered that rsync does not check for fnamecmp filenames and also does not apply the sanitize_paths protection mechanism to pathnames. An attacker could use this to bypass access restrictions. (CVE-2017-17434)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 12.04 ESM
rsync - 3.0.9-1ubuntu1.2

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system update will make all the necessary changes.

References