drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in Linux-PAM (Aktualisierung)
Name: |
Mehrere Probleme in Linux-PAM (Aktualisierung) |
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ID: |
USN-2935-2 |
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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: |
Mi, 16. März 2016, 23:55 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-7041
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3238
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2583 |
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Applikationen: |
Linux-PAM |
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Update von: |
Mehrere Probleme in Linux-PAM |
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Originalnachricht |
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========================================================================== Ubuntu Security Notice USN-2935-2 March 16, 2016
pam regression ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 15.10 - Ubuntu 14.04 LTS - Ubuntu 12.04 LTS
Summary:
USN-2935-1 introduced a regression in PAM.
Software Description: - pam: Pluggable Authentication Modules
Details:
USN-2935-1 fixed vulnerabilities in PAM. The updates contained a packaging change that prevented upgrades in certain multiarch environments. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
It was discovered that the PAM pam_userdb module incorrectly used a case-insensitive method when comparing hashed passwords. A local attacker could possibly use this issue to make brute force attacks easier. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2013-7041) Sebastian Krahmer discovered that the PAM pam_timestamp module incorrectly performed filtering. A local attacker could use this issue to create arbitrary files, or possibly bypass authentication. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2014-2583) Sebastien Macke discovered that the PAM pam_unix module incorrectly handled large passwords. A local attacker could possibly use this issue in certain environments to enumerate usernames or cause a denial of service. (CVE-2015-3238)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 15.10: libpam-modules 1.1.8-3.1ubuntu3.2
Ubuntu 14.04 LTS: libpam-modules 1.1.8-1ubuntu2.2
Ubuntu 12.04 LTS: libpam-modules 1.1.3-7ubuntu2.2
In general, a standard system update will make all the necessary changes.
References: http://www.ubuntu.com/usn/usn-2935-2 http://www.ubuntu.com/usn/usn-2935-1 https://launchpad.net/bugs/1558114
Package Information: https://launchpad.net/ubuntu/+source/pam/1.1.8-3.1ubuntu3.2 https://launchpad.net/ubuntu/+source/pam/1.1.8-1ubuntu2.2 https://launchpad.net/ubuntu/+source/pam/1.1.3-7ubuntu2.2
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