drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Zwei Probleme in OpenSSH
Name: |
Zwei Probleme in OpenSSH |
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ID: |
USN-2710-1 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 12.04 LTS, Ubuntu 14.04 LTS, Ubuntu 15.04 |
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Datum: |
Sa, 15. August 2015, 12:09 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5600
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5352 |
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Applikationen: |
OpenSSH |
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Originalnachricht |
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========================================================================== Ubuntu Security Notice USN-2710-1 August 14, 2015
openssh vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 15.04 - Ubuntu 14.04 LTS - Ubuntu 12.04 LTS
Summary:
Several security issues were fixed in OpenSSH.
Software Description: - openssh: secure shell (SSH) for secure access to remote machines
Details:
Moritz Jodeit discovered that OpenSSH incorrectly handled usernames when using PAM authentication. If an additional vulnerability were discovered in the OpenSSH unprivileged child process, this issue could allow a remote attacker to perform user impersonation. (CVE number pending)
Moritz Jodeit discovered that OpenSSH incorrectly handled context memory when using PAM authentication. If an additional vulnerability were discovered in the OpenSSH unprivileged child process, this issue could allow a remote attacker to bypass authentication or possibly execute arbitrary code. (CVE number pending)
Jann Horn discovered that OpenSSH incorrectly handled time windows for X connections. A remote attacker could use this issue to bypass certain access restrictions. (CVE-2015-5352)
It was discovered that OpenSSH incorrectly handled keyboard-interactive authentication. In a non-default configuration, a remote attacker could possibly use this issue to perform a brute-force password attack. (CVE-2015-5600)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 15.04: openssh-server 1:6.7p1-5ubuntu1.2
Ubuntu 14.04 LTS: openssh-server 1:6.6p1-2ubuntu2.2
Ubuntu 12.04 LTS: openssh-server 1:5.9p1-5ubuntu1.6
In general, a standard system update will make all the necessary changes.
References: http://www.ubuntu.com/usn/usn-2710-1 CVE-2015-5352, CVE-2015-5600
Package Information: https://launchpad.net/ubuntu/+source/openssh/1:6.7p1-5ubuntu1.2 https://launchpad.net/ubuntu/+source/openssh/1:6.6p1-2ubuntu2.2 https://launchpad.net/ubuntu/+source/openssh/1:5.9p1-5ubuntu1.6
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