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Ubuntu Security Notice USN-4643-1

Ubuntu Security Notice USN-4643-1
Posted Nov 24, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4643-1 - It was discovered that atftp's FTP server did not properly handler certain input. An attacker could use this to to cause a denial of service or possibly execute arbitrary code. It was discovered that atftp's FTP server did not make proper use of mutexes when locking certain data structures. An attacker could use this to cause a denial of service via a NULL pointer dereference.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2019-11365, CVE-2019-11366
MD5 | bcc71db7af3bff7d8c36dc1d56b825fe

Ubuntu Security Notice USN-4643-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4643-1
November 24, 2020

atftp vulnerabilities
==========================================================================

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

- Ubuntu 16.04 LTS

Summary:

atftp could be made to crash or run programs if it received
specially crafted network traffic.

Software Description:
- atftp: Advanced TFTP Server and Client

Details:

It was discovered that atftp's FTP server did not properly handler certain
input. An attacker could use this to to cause a denial of service (crash)
or possibly execute arbitrary code. (CVE-2019-11365)

It was discovered that atftp's FTP server did not make proper use of
mutexes when locking certain data structures. An attacker could use this to
cause a denial of service via a NULL pointer dereference. (CVE-2019-11366)

Update instructions:

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

Ubuntu 16.04 LTS:
atftp 0.7.git20120829-3.1~0.16.04.1
atftpd 0.7.git20120829-3.1~0.16.04.1

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

References:
https://usn.ubuntu.com/4643-1
CVE-2019-11365, CVE-2019-11366

Package Information:
https://launchpad.net/ubuntu/+source/atftp/0.7.git20120829-3.1~0.16.04.1

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