USN-3506-1: rsync vulnerabilities

Ubuntu Security Notice USN-3506-1

7th December, 2017

rsync vulnerabilities

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

• Ubuntu 17.10
• Ubuntu 17.04
• Ubuntu 16.04 LTS
• Ubuntu 14.04 LTS

Summary

Several security issues were fixed in rsync.

Software description

• 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)

Update instructions

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

Ubuntu 17.10:

rsync 3.1.2-2ubuntu0.1

Ubuntu 17.04:

rsync 3.1.2-1ubuntu0.1

Ubuntu 16.04 LTS:

rsync 3.1.1-3ubuntu1.1

Ubuntu 14.04 LTS:

rsync 3.1.0-2ubuntu0.3

To update your system, please follow these instructions: http://ift.tt/17VXqjU.

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

References

CVE-2017-17433, CVE-2017-17434

from Ubuntu Security Notices http://ift.tt/2jpzNeC