[SECURITY] [DSA 3548-1] samba security update

Fabricante: Debian
Fecha: 13/04/2016
Identificador: DSA 3548-1
[SECURITY] [DSA 3548-1] samba security update
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - ------------------------------------------------------------------------- Debian Security Advisory DSA-3548-1 security@debian.org https://www.debian.org/security/ Salvatore Bonaccorso April 13, 2016 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : samba CVE ID : CVE-2015-5370 CVE-2016-2110 CVE-2016-2111 CVE-2016-2112 CVE-2016-2113 CVE-2016-2114 CVE-2016-2115 CVE-2016-2118 Several vulnerabilities have been discovered in Samba, a SMB/CIFS file, print, and login server for Unix. The Common Vulnerabilities and Exposures project identifies the following issues: CVE-2015-5370 Jouni Knuutinen from Synopsys discovered flaws in the Samba DCE-RPC code which can lead to denial of service (crashes and high cpu consumption) and man-in-the-middle attacks. CVE-2016-2110 Stefan Metzmacher of SerNet and the Samba Team discovered that the feature negotiation of NTLMSSP does not protect against downgrade attacks. CVE-2016-2111 When Samba is configured as domain controller, it allows remote attackers to spoof the computer name of a secure channel's endpoint, and obtain sensitive session information. This flaw corresponds to the same vulnerability as CVE-2015-0005 for Windows, discovered by Alberto Solino from Core Security. CVE-2016-2112 Stefan Metzmacher of SerNet and the Samba Team discovered that a man-in-the-middle attacker can downgrade LDAP connections to avoid integrity protection. CVE-2016-2113 Stefan Metzmacher of SerNet and the Samba Team discovered that man-in-the-middle attacks are possible for client triggered LDAP connections and ncacn_http connections. CVE-2016-2114 Stefan Metzmacher of SerNet and the Samba Team discovered that Samba does not enforce required smb signing even if explicitly configured. CVE-2016-2115 Stefan Metzmacher of SerNet and the Samba Team discovered that SMB connections for IPC traffic are not integrity-protected. CVE-2016-2118 Stefan Metzmacher of SerNet and the Samba Team discovered that a man-in-the-middle attacker can intercept any DCERPC traffic between a client and a server in order to impersonate the client and obtain the same privileges as the authenticated user account. For the oldstable distribution (wheezy), these problems have been fixed in version 2:3.6.6-6+deb7u9. The oldstable distribution is not affected by CVE-2016-2113 and CVE-2016-2114. For the stable distribution (jessie), these problems have been fixed in version 2:4.2.10+dfsg-0+deb8u1. The issues were addressed by upgrading to the new upstream version 4.2.10, which includes additional changes and bugfixes. The depending libraries ldb, talloc, tdb and tevent required as well an update to new upstream versions for this update. For the unstable distribution (sid), these problems have been fixed in version 2:4.3.7+dfsg-1. Please refer to https://www.samba.org/samba/latest_news.html#4.4.2 https://www.samba.org/samba/history/samba-4.2.0.html https://www.samba.org/samba/history/samba-4.2.10.html for further details (in particular for new options and defaults). We'd like to thank Andreas Schneider and Guenther Deschner (Red Hat), Stefan Metzmacher and Ralph Boehme (SerNet) and Aurelien Aptel (SUSE) for the massive backporting work required to support Samba 3.6 and Samba 4.2 and Andrew Bartlett (Catalyst), Jelmer Vernooij and Mathieu Parent for their help in preparing updates of Samba and the underlying infrastructure libraries. We recommend that you upgrade your samba packages. Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBCgAGBQJXDq7QAAoJEAVMuPMTQ89EFD0QAJton3j2Boy5mh2UzSi5mAzk jfyDcHzRf1WeCgNvXQeB6mZd0c/IYPrgEjQowLPBuggPrL4d2lME0VI8YIQlJGri pM4a4OfozY6vHbkWR+6SwQYeXm3022l5oIr0R9s16kn7KeLMt6AzCJ0SIMRJ2eIU FW5LD7Bpft61GWauuXA+7kUENoSeDFutXFi17aXonaTTX6mO7b14F74FspcwLo2b QPxpsmLutgGhMDQeuET7y+5gxcweDOujB7WgSsaYkZ2PvUYL0HHO16ec3FrnOvYC izC4Sn/q/SnfnIsfwPerCWIDf4IOky3nFW2E6ZKdS6xsAkS2/8B2a0sJYH1jCC2L /Q+56WhJaURRnXGTbgrTAJQmX9izNYrB59Xfy9YxS84inA/UcReQnPI0OmcO9nye qS2N6SfOluuat8kjnjVt4E5KjMuDGUuVaYXUvFAQ8YwW+0pRBht3N/JMfEyv3C4R S62vgehEJ335lK4Gx03Twqc9gxN7CIGfE1gDhFPadrbna4ur9PCAoGpR9XcOSHwV 6q4i1BKyyl9oiZHlwEI0b4lYAvmJ9GQFS388DYEZJRCzPdlY/sK75BHzoXIYKfH2 NhGkF+JSroOzUZeP/2Zah9AjokCgkBg3k9dI6IZqJHBIZs7MryP6+wdFUn64OXc2 kI9XbdB93Qgd6XhHF7s6 =a3Oh -----END PGP SIGNATURE-----