USN-4292-1: rsync vulnerabilities
rsync vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
- Ubuntu 16.04 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 incorrectly handled pointer arithmetic in zlib.
An attacker could use this issue to cause rsync to crash, resulting in a
denial of service, or possibly execute arbitrary code. (CVE-2016-9840,
CVE-2016-9841)
It was discovered that rsync incorrectly handled vectors involving left shifts
of negative integers in zlib. An attacker could use this issue to cause rsync
to crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2016-9842)
It was discovered that rsync incorrectly handled vectors involving big-endian
CRC calculation in zlib. An attacker could use this issue to cause rsync to
crash, resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2016-9843)
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 18.04 LTS
- rsync – 3.1.2-2.1ubuntu1.1
- Ubuntu 16.04 LTS
- rsync – 3.1.1-3ubuntu1.3
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
Source: USN-4292-1: rsync vulnerabilities
