drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in openssh
Name: |
Mehrere Probleme in openssh |
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ID: |
SSA:2006-272-02 |
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Distribution: |
Slackware |
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Plattformen: |
Slackware -current, Slackware 8.1, Slackware 9.0, Slackware 9.1, Slackware 10.0, Slackware 10.1, Slackware 10.2 |
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Datum: |
Fr, 29. September 2006, 10:12 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4924
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5051
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5052 |
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Applikationen: |
Portable OpenSSH |
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Originalnachricht |
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
[slackware-security] openssh (SSA:2006-272-02)
New openssh packages are available for Slackware 8.1, 9.0, 9.1, 10.0, 10.1, 10.2, and -current to fix security issues.
More details about these issues may be found in the Common Vulnerabilities and Exposures (CVE) database:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4924 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5051 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5052
Here are the details from the Slackware 10.2 ChangeLog: +--------------------------+ patches/packages/openssh-4.4p1-i486-1_slack10.2.tgz: Upgraded to openssh-4.4p1. This fixes a few security related issues. From the release notes found at http://www.openssh.com/txt/release-4.4: * Fix a pre-authentication denial of service found by Tavis Ormandy, that would cause sshd(8) to spin until the login grace time expired. * Fix an unsafe signal hander reported by Mark Dowd. The signal handler was vulnerable to a race condition that could be exploited to perform a pre-authentication denial of service. On portable OpenSSH, this vulnerability could theoretically lead to pre-authentication remote code execution if GSSAPI authentication is enabled, but the likelihood of successful exploitation appears remote. * On portable OpenSSH, fix a GSSAPI authentication abort that could be used to determine the validity of usernames on some platforms. Links to the CVE entries will be found here: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4924 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5051 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-5052 After this upgrade, make sure the permissions on /etc/rc.d/rc.sshd are set the way you want them. Future upgrades will respect the existing permissions settings. Thanks to Manuel Reimer for pointing out that upgrading openssh would enable a previously disabled sshd daemon. Do better checking of passwd, shadow, and group to avoid adding redundant entries to these files. Thanks to Menno Duursma. (* Security fix *) +--------------------------+
Where to find the new packages: +-----------------------------+
HINT: Getting slow download speeds from ftp.slackware.com? Give slackware.osuosl.org a try. This is another primary FTP site for Slackware that can be considerably faster than downloading from ftp.slackware.com.
Thanks to the friendly folks at the OSU Open Source Lab (http://osuosl.org) for donating additional FTP and rsync hosting to the Slackware project! :-)
Also see the "Get Slack" section on http://slackware.com for additional mirror sites near you.
Updated package for Slackware 8.1: openssh-4.4p1-i386-1_slack8.1.tgz
Updated package for Slackware 9.0: openssh-4.4p1-i386-1_slack9.0.tgz
Updated package for Slackware 9.1: openssh-4.4p1-i486-1_slack9.1.tgz
Updated package for Slackware 10.0: openssh-4.4p1-i486-1_slack10.0.tgz
Updated package for Slackware 10.1: openssh-4.4p1-i486-1_slack10.1.tgz
Updated package for Slackware 10.2: openssh-4.4p1-i486-1_slack10.2.tgz
Updated package for Slackware -current: openssh-4.4p1-i486-1.tgz
MD5 signatures: +-------------+
Slackware 8.1 package: 0a42fb286fd722f019dfc5f167d69ced openssh-4.4p1-i386-1_slack8.1.tgz
Slackware 9.0 package: 92563664845d902251d7b19254b3dda1 openssh-4.4p1-i386-1_slack9.0.tgz
Slackware 9.1 package: 5814a00eefa0b1e1fe7673862525788e openssh-4.4p1-i486-1_slack9.1.tgz
Slackware 10.0 package: 24ce8b2013b8759a173e5ccd7db54289 openssh-4.4p1-i486-1_slack10.0.tgz
Slackware 10.1 package: e7950e6a357871092514ce07051f055e openssh-4.4p1-i486-1_slack10.1.tgz
Slackware 10.2 package: b8d2d67276a662de40d6adf9bfe00bce openssh-4.4p1-i486-1_slack10.2.tgz
Slackware -current package: 6f2c30b503db9685180af6f4a87eadcc openssh-4.4p1-i486-1.tgz
Installation instructions: +------------------------+
Upgrade the package as root: # upgradepkg openssh-4.4p1-i486-1_slack10.2.tgz
If you are running an sshd daemon, restart it:
sh /etc/rc.d/rc.sshd restart
+-----+
Slackware Linux Security Team http://slackware.com/gpg-key security@slackware.com
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