samba: Spoofing vulnerability when domain controller is configured

It was discovered that Samba configured as a Domain Controller would establish a secure communication channel with a machine using a spoofed computer name. A remote attacker able to observe network traffic could use this flaw to obtain session-related information about the spoofed machine...

samba: Missing downgrade detection

It was found that Samba's LDAP implementation did not enforce integrity protection for LDAP connections. A man-in-the-middle attacker could use this flaw to downgrade LDAP connections to use no integrity protection, allowing them to hijack such connections...

samba: Smb signing not required by default when smb client connection is used for ipc usage

It was found that Samba did not enable integrity protection for IPC traffic by default. A man-in-the-middle attacker could use this flaw to view and modify the data sent between a Samba server and a client...

samba: Man-in-the-middle attacks possible with NTLMSSP authentication

Several flaws were found in Samba's implementation of NTLMSSP authentication. An unauthenticated, man-in-the-middle attacker could use this flaw to clear the encryption and integrity flags of a connection, causing data to be transmitted in plain text. The attacker could also force the client or...

samba: crash in dcesrv_auth_bind_ack due to missing error check

Multiple flaws were found in Samba's DCE/RPC protocol implementation. A remote, authenticated attacker could use these flaws to cause a denial of service against the Samba server high CPU load or a crash or, possibly, execute arbitrary code with the permissions of the user running Samba root. Thi...

Badlock Windows, Samba Man-in-the-Middle Vulnerability

Weeks of anxiety and concern over the Badlock vulnerability ended today with an anticlimactic thud. Badlock was the security boogeyman since the appearance three weeks ago of a website and logo branding the bug as something serious in Samba, an open source implementation of the server message blo...

Samba 4.2.x < 4.2.10 Multiple Vulnerabilities (Badlock)

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Samba 4.4.x < 4.4.1 Multiple Vulnerabilities (Badlock)

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Security fix for the ALT Linux 8 package samba-DC version 4.4.2-alt1

April 12, 2016 Andrey Cherepanov 4.4.2-alt1 - New version - Security fixes: - CVE-2015-5370 Multiple errors in DCE-RPC code - CVE-2016-2110 Man in the middle attacks possible with NTLMSSP - CVE-2016-2111 NETLOGON Spoofing Vulnerability - CVE-2016-2112 LDAP client and server don't enforce integrit...

samba security update

3.6.23-30.0.1 - Remove use-after-free talloctos inlined function problem John Haxby orabug 18253258 3.6.23-30 - related: 1322686 - Update manpages 3.6.23-29 - related: 1322686 - Update CVE patchset 3.6.23-28 - related: 1322686 - Update manpages 3.6.23-27 - related: 1322686 - Update CVE patchset...

Samba 4.3.x < 4.3.7 Multiple Vulnerabilities (Badlock)

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Samba Security Updates Address Badlock Vulnerabilities

The Samba Team has released security updates that address vulnerabilities, collectively known as Badlock, affecting both Windows operating systems and Samba in UNIX-like platforms. Exploitation of these vulnerabilities may allow a remote attacker to take control of an affected system or create a...

Security fix for the ALT Linux 10 package samba version 4.4.2-alt1

April 12, 2016 Andrey Cherepanov 4.4.2-alt1 - New version - Security fixes: - CVE-2015-5370 Multiple errors in DCE-RPC code - CVE-2016-2110 Man in the middle attacks possible with NTLMSSP - CVE-2016-2111 NETLOGON Spoofing Vulnerability - CVE-2016-2112 LDAP client and server don't enforce integrit...

Man in the middle attacks possible with NTLMSSP

Description There are several man in the middle attacks possible with NTLMSSP authentication. E.g. NTLMSSPNEGOTIATESIGN and NTLMSSPNEGOTIATESEAL can be cleared by a man in the middle. This was by protocol design in earlier Windows versions. Windows Server 2003 RTM and Vista RTM introduced a way t...

The LDAP client and server don't enforce integrity protection

Description Samba uses various LDAP client libraries, a builtin one and/or the system ldap libraries typically openldap. As active directory domain controller Samba also provides an LDAP server. Samba takes care of doing SASL GSS-SPNEGO authentication with Kerberos or NTLMSSP for LDAP connections...

Missing TLS certificate validation allows man in the middle attacks

Description Samba has support for TLS/SSL for some protocols: ldap and http, but currently certificates are not validated at all. While we have a "tls cafile" option, the configured certificate is not used to validate the server certificate. This applies to ldaps:// connections triggered by tools...

UBUNTU-CVE-2016-2118

The MS-SAMR and MS-LSAD protocol implementations in Samba 3.x and 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4.x before 4.4.2 mishandle DCERPC connections, which allows man-in-the-middle attackers to perform protocol-downgrade attacks and impersonate users by modifying the client-server data...

CVE-2016-2118

The MS-SAMR and MS-LSAD protocol implementations in Samba 3.x and 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4.x before 4.4.2 mishandle DCERPC connections, which allows man-in-the-middle attackers to perform protocol-downgrade attacks and impersonate users by modifying the client-server data...

UBUNTU-CVE-2016-2112

The bundled LDAP client library in Samba 3.x and 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4.x before 4.4.2 does not recognize the "client ldap sasl wrapping" setting, which allows man-in-the-middle attackers to perform LDAP protocol-downgrade attacks by modifying the client-server data stream...

samba -- multiple vulnerabilities

Samba team reports: CVE-2015-5370 Errors in Samba DCE-RPC code can lead to denial of service crashes and high cpu consumption and man in the middle attacks. CVE-2016-2110 The feature negotiation of NTLMSSP is not downgrade protected. A man in the middle is able to clear even required flags,...