1. Ubuntu Security Notices
  2. USN-3506-1

USN-3506-1: rsync vulnerabilities

Publication date

7 December 2017

Overview

Several security issues were fixed in rsync.

Releases

Packages

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

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)

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

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
17.10 artful rsync –  3.1.2-2ubuntu0.1
17.04 zesty rsync –  3.1.2-1ubuntu0.1
16.04 xenial rsync –  3.1.1-3ubuntu1.1
14.04 trusty rsync –  3.1.0-2ubuntu0.3

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Get Ubuntu Pro

References

Have additional questions?

Talk to a member of the team ›