What is the vulnerability ID for this security advisory?

The vulnerability ID for this security advisory is USN-4447-1.

What is the title of this security advisory?

The title of this security advisory is USN-4447-1: libssh vulnerability.

What is the description of this vulnerability?

The vulnerability involves libssh incorrectly handling certain requests, which can be exploited by an attacker to cause a denial of service.

Which software versions are affected by this vulnerability?

The software versions affected by this vulnerability include libssh-4 0.9.3-2ubuntu2.1 in Ubuntu 20.04, libssh-4 0.8.0~20170825.94fa1e38-1ubuntu0.7 in Ubuntu 18.04, and libssh-4 0.6.3-4.3ubuntu0.6 in Ubuntu 16.04.

Where can I find more information about this vulnerability?

You can find more information about this vulnerability in the following references: [CVE-2020-16135](https://ubuntu.com/security/CVE-2020-16135), [libssh-4 0.9.3-2ubuntu2.1](https://launchpad.net/ubuntu/+source/libssh/0.9.3-2ubuntu2.1), [libssh-4 0.8.0~20170825.94fa1e38-1ubuntu0.7](https://launchpad.net/ubuntu/+source/libssh/0.8.0~20170825.94fa1e38-1ubuntu0.7).

Vulnerability/
USN-4447-1

4/8/2020

USN-4447-1: libssh vulnerability

First published: Tue Aug 04 2020(Updated: )

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

Affected Software	Affected Version	How to fix
All of
ubuntu/libssh-4	<0.9.3-2ubuntu2.1	0.9.3-2ubuntu2.1
Ubuntu Ubuntu	=20.04
All of
ubuntu/libssh-4	<0.8.0~20170825.94fa1e38-1ubuntu0.7	0.8.0~20170825.94fa1e38-1ubuntu0.7
Ubuntu Ubuntu	=18.04
All of
ubuntu/libssh-4	<0.6.3-4.3ubuntu0.6	0.6.3-4.3ubuntu0.6
Ubuntu Ubuntu	=16.04

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Reference Links

Child vulnerabilities

(Contains the following vulnerabilities)

CVE-2020-16135

Frequently Asked Questions

What is the vulnerability ID for this security advisory?
The vulnerability ID for this security advisory is USN-4447-1.
What is the title of this security advisory?
The title of this security advisory is USN-4447-1: libssh vulnerability.
What is the description of this vulnerability?
The vulnerability involves libssh incorrectly handling certain requests, which can be exploited by an attacker to cause a denial of service.
Which software versions are affected by this vulnerability?
The software versions affected by this vulnerability include libssh-4 0.9.3-2ubuntu2.1 in Ubuntu 20.04, libssh-4 0.8.0~20170825.94fa1e38-1ubuntu0.7 in Ubuntu 18.04, and libssh-4 0.6.3-4.3ubuntu0.6 in Ubuntu 16.04.
Where can I find more information about this vulnerability?
You can find more information about this vulnerability in the following references: [CVE-2020-16135](https://ubuntu.com/security/CVE-2020-16135), [libssh-4 0.9.3-2ubuntu2.1](https://launchpad.net/ubuntu/+source/libssh/0.9.3-2ubuntu2.1), [libssh-4 0.8.0~20170825.94fa1e38-1ubuntu0.7](https://launchpad.net/ubuntu/+source/libssh/0.8.0~20170825.94fa1e38-1ubuntu0.7).

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version/ubuntu ubuntu/18.04
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