CVE-2016-2119: Code Injection
First published: Thu Jul 07 2016(Updated: )
libcli/smb/smbXcli_base.c in Samba 4.x before 4.2.14, 4.3.x before 4.3.11, and 4.4.x before 4.4.5 allows man-in-the-middle attackers to bypass a client-signing protection mechanism, and consequently spoof SMB2 and SMB3 servers, via the (1) SMB2_SESSION_FLAG_IS_GUEST or (2) SMB2_SESSION_FLAG_IS_NULL flag.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Samba | >=4.0.0<4.2.14 | |
| Samba | >=4.3.0<4.3.11 | |
| Samba | >=4.4.0<4.4.5 |
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Reference Links
- http://lists.opensuse.org/opensuse-updates/2016-07/msg00060.html
- http://rhn.redhat.com/errata/RHSA-2016-1486.html
- http://rhn.redhat.com/errata/RHSA-2016-1487.html
- http://rhn.redhat.com/errata/RHSA-2016-1494.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- http://www.securityfocus.com/bid/91700
- http://www.securitytracker.com/id/1036244
- https://security.gentoo.org/glsa/201805-07
- https://www.samba.org/samba/security/CVE-2016-2119.html
Frequently Asked Questions
What is the severity of CVE-2016-2119?
CVE-2016-2119 has a high severity rating due to its potential for exploitation by man-in-the-middle attackers.
How do I fix CVE-2016-2119?
To fix CVE-2016-2119, upgrade Samba to versions 4.2.14, 4.3.11, or 4.4.5 or later.
What versions of Samba are affected by CVE-2016-2119?
CVE-2016-2119 affects Samba versions prior to 4.2.14, 4.3.x before 4.3.11, and 4.4.x before 4.4.5.
What type of attack is CVE-2016-2119 associated with?
CVE-2016-2119 is associated with man-in-the-middle attacks that allow spoofing of SMB2 and SMB3 servers.
Can CVE-2016-2119 be exploited remotely?
Yes, CVE-2016-2119 can be remotely exploited by attackers to bypass client-signing protections.
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- version/samba/4.0.0
- version/samba/4.3.0
- version/samba/4.4.0