drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Zwei Probleme in libssh
Name: |
Zwei Probleme in libssh |
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ID: |
USN-2912-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 12.04 LTS, Ubuntu 14.04 LTS, Ubuntu 15.10 |
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Datum: |
Di, 23. Februar 2016, 22:39 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3146
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0739 |
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Applikationen: |
libssh |
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Originalnachricht |
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --M3t72D1FdkgdXFcuVp7fjfMtcT8O6aMkS Content-Type: text/plain; charset=utf- Content-Transfer-Encoding: quoted-printable
========================================================================== Ubuntu Security Notice USN-2912-1 February 23, 2016
libssh vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 15.10 - Ubuntu 14.04 LTS - Ubuntu 12.04 LTS
Summary:
Several security issues were fixed in libssh.
Software Description: - libssh: A tiny C SSH library
Details:
Mariusz Ziulek discovered that libssh incorrectly handled certain packets. A remote attacker could possibly use this issue to cause libssh to crash, resulting in a denial of service. (CVE-2015-3146)
Aris Adamantiadis discovered that libssh incorrectly generated ephemeral secret keys of 128 bits instead of the recommended 1024 or 2048 bits when using the diffie-hellman-group1 and diffie-hellman-group14 methods. If a remote attacker were able to perform a man-in-the-middle attack, this flaw could be exploited to view sensitive information. (CVE-2016-0739)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 15.10: libssh-4 0.6.3-3ubuntu3.2
Ubuntu 14.04 LTS: libssh-4 0.6.1-0ubuntu3.3
Ubuntu 12.04 LTS: libssh-4 0.5.2-1ubuntu0.12.04.6
In general, a standard system update will make all the necessary changes.
References: http://www.ubuntu.com/usn/usn-2912-1 CVE-2015-3146, CVE-2016-0739
Package Information: https://launchpad.net/ubuntu/+source/libssh/0.6.3-3ubuntu3.2 https://launchpad.net/ubuntu/+source/libssh/0.6.1-0ubuntu3.3 https://launchpad.net/ubuntu/+source/libssh/0.5.2-1ubuntu0.12.04.6
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