[USN-3506-2] rsync vulnerabilities
Leonidas S. Barbosa
leo.barbosa at canonical.com
Thu Dec 7 14:11:06 UTC 2017
Ubuntu Security Notice USN-3506-2
December 07, 2017
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 ESM
Several security issues were fixed in rsync.
- rsync: fast, versatile, remote (and local) file-copying tool
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.
The problem can be corrected by updating your system to the following
Ubuntu 12.04 ESM:
In general, a standard system update will make all the necessary
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