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Sicherheit: Mangelnde Rechteprüfung in libssh (Aktualisierung)
Aktuelle Meldungen Distributionen
Name: Mangelnde Rechteprüfung in libssh (Aktualisierung)
ID: USN-3795-3
Distribution: Ubuntu
Plattformen: Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 18.10
Datum: Do, 29. November 2018, 18:16
Referenzen: Keine Angabe
Applikationen: libssh
Update von: Mangelnde Rechteprüfung in libssh

Originalnachricht

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From: Marc Deslauriers <marc.deslauriers@canonical.com>
Reply-To: Ubuntu Security <security@ubuntu.com>
To: ubuntu-security-announce@lists.ubuntu.com
Message-ID: <f9353bf3-3619-6087-6252-9a70a6ea772c@canonical.com>
Subject: [USN-3795-3] libssh regression

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==========================================================================
Ubuntu Security Notice USN-3795-3
November 29, 2018

libssh regression
==========================================================================

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

- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

USN-3795-1 and USN-3795-2 introduced a regression in libssh.

Software Description:
- libssh: A tiny C SSH library

Details:

USN-3795-1 and USN-3795-2 fixed a vulnerability in libssh. The upstream
fix introduced a regression. This update fixes the problem.

Original advisory details:

Peter Winter-Smith discovered that libssh incorrectly handled
authentication when being used as a server. A remote attacker could use
this issue to bypass authentication without any credentials.

Update instructions:

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

Ubuntu 18.10:
libssh-4 0.8.1-1ubuntu0.3

Ubuntu 18.04 LTS:
libssh-4 0.8.0~20170825.94fa1e38-1ubuntu0.2

Ubuntu 16.04 LTS:
libssh-4 0.6.3-4.3ubuntu0.2

Ubuntu 14.04 LTS:
libssh-4 0.6.1-0ubuntu3.5

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
https://usn.ubuntu.com/usn/usn-3795-3
https://usn.ubuntu.com/usn/usn-3795-1
https://launchpad.net/bugs/1805348

Package Information:
https://launchpad.net/ubuntu/+source/libssh/0.8.1-1ubuntu0.3
https://launchpad.net/ubuntu/+source/libssh/0.8.0~20170825.94fa1e38-1ubuntu0.2
https://launchpad.net/ubuntu/+source/libssh/0.6.3-4.3ubuntu0.2
https://launchpad.net/ubuntu/+source/libssh/0.6.1-0ubuntu3.5


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