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Ubuntu Security Notice USN-3276-3

Ubuntu Security Notice USN-3276-3
Posted Nov 14, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3276-3 - USN-3276-1 and USN-3276-2 fixed vulnerabilities in shadow. This update provides the corresponding update for Ubuntu 12.04 ESM. Sebastian Krahmer discovered integer overflows in shadow utilities. A local attacker could possibly cause them to crash or potentially gain privileges via crafted input. Various other issues were also addressed.

tags | advisory, overflow, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2016-6252, CVE-2017-2616
MD5 | b3c44d45c3cf3b56ca446d0bc127ca24

Ubuntu Security Notice USN-3276-3

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3276-3
November 14, 2017

shadow vulnerability
==========================================================================

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

- Ubuntu 12.04 ESM

Summary:

su could be made to crash or stop programs as an administrator.

Software Description:
- shadow: system login tools

Details:

USN-3276-1 and USN-3276-2 fixed vulnerabilities in shadow. This update
provides the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

Sebastian Krahmer discovered integer overflows in shadow utilities.
A local attacker could possibly cause them to crash or potentially
gain privileges via crafted input. (CVE-2016-6252)

Update instructions:

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

Ubuntu 12.04 ESM:
login 1:4.1.4.2+svn3283-3ubuntu5.2
passwd 1:4.1.4.2+svn3283-3ubuntu5.2

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

References:
https://www.ubuntu.com/usn/usn-3276-3
https://www.ubuntu.com/usn/usn-3276-1
CVE-2017-2616

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