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Ubuntu Security Notice USN-4149-1

Ubuntu Security Notice USN-4149-1
Posted Oct 8, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4149-1 - It was discovered that Unbound incorrectly handled certain NOTIFY queries. An attacker could possibly use this issue to cause a denial of service.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2019-16866
MD5 | b07065f7300ee21608ff0fe67d97ff6e

Ubuntu Security Notice USN-4149-1

Change Mirror Download
=========================================================================
Ubuntu Security Notice USN-4149-1
October 08, 2019

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

- Ubuntu 19.04

Summary:

Unbound could be made to crash if it received a specially crafted
NOTIFY query.

Software Description:
- unbound: validating, recursive, caching DNS resolver

Details:

It was discovered that Unbound incorrectly handled certain NOTIFY queries.
An attacker could possibly use this issue to cause a denial of service.

Update instructions:

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

Ubuntu 19.04:
libunbound8 1.9.0-2ubuntu0.1
unbound 1.9.0-2ubuntu0.1

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

References:
https://usn.ubuntu.com/4149-1
CVE-2019-16866

Package Information:
https://launchpad.net/ubuntu/+source/unbound/1.9.0-2ubuntu0.1
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