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Slackware 14.x: SSA:2016-189-01 Critical Samba Downgrade Threat

slackware
Calendar Grey July 7, 2016
Dist Slackware Esm H88
Recent samba updates tackle significant vulnerabilities in Slackware 14.x, along with step-by-step upgrade guidance for affected users.
New samba packages are available for Slackware 14.0, 14.1, 14.2, and -current to fix security issues

Summary

Here are the details from the Slackware 14.2 ChangeLog: patches/packages/samba-4.4.5-i586-1_slack14.2.txz: Upgraded. This release fixes a security issue: Client side SMB2/3 required signing can be downgraded. It's possible for an attacker to downgrade the required signing for an SMB2/3 client connection, by injecting the SMB2_SESSION_FLAG_IS_GUEST or SMB2_SESSION_FLAG_IS_NULL flags. This means that the attacker can impersonate a server being connected to by Samba, and return malicious results. For more information, see: https://www.cve.org/CVERecord?id=CVE-2016-2119 (* Security fix *)

Where Find New Packages

Thanks to the friendly folks at the OSU Open Source Lab (https://osuosl.org/) for donating FTP and rsync hosting to the Slackware project! :-)
Also see the "Get Slack" section on http://www.slackware.com/ for additional mirror sites near you.
Updated package for Slackware 14.0:
Updated package for Slackware x86_64 14.0:
Updated package for Slackware 14.1:
Updated package for Slackware x86_64 14.1:
Updated package for Slackware 14.2:
Updated package for Slackware x86_64 14.2:
Updated package for Slackware -current:
Updated package for Slackware x86_64 -current:

MD5 Signatures

Slackware 14.0 package: 6138a02471f3320cefec87d05bd2a2f4 samba-4.2.14-i486-1_slack14.0.txz
Slackware x86_64 14.0 package: 4b49e85f14da9a3ed170012660796beb samba-4.2.14-x86_64-1_slack14.0.txz
Slackware 14.1 package: 086984352ac698fdc207f09e6ab58977 samba-4.2.14-i486-1_slack14.1.txz
Slackware x86_64 14.1 package: 38624fc438183525e0a81a5975162f88 samba-4.2.14-x86_64-1_slack14.1.txz
Slackware 14.2 package: bce33ebd9db8bd4f3de06e28195045de samba-4.4.5-i586-1_slack14.2.txz
Slackware x86_64 14.2 package: 63478673374cddf5963fb870253c43b4 samba-4.4.5-x86_64-1_slack14.2.txz
Slackware -current package: bce33ebd9db8bd4f3de06e28195045de n/samba-4.4.5-i586-1.txz
Slackware x86_64 -current package: 63478673374cddf5963fb870253c43b4 n/samba-4.4.5-x86_64-1.txz

Severity
critical
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Installation Instructions

Installation instructions: Upgrade the package as root: # upgradepkg samba-4.4.5-i586-1_slack14.2.txz Then, if Samba is running restart it: # /etc/rc.d/rc.samba restart

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