ID de Prueba:	1.3.6.1.4.1.25623.1.1.2.2020.1032
Categoría:	Huawei EulerOS Local Security Checks
Título:	Huawei EulerOS: Security Advisory for samba (EulerOS-SA-2020-1032)
Resumen:	The remote host is missing an update for the Huawei EulerOS 'samba' package(s) announced via the EulerOS-SA-2020-1032 advisory.
Descripción:	Summary: The remote host is missing an update for the Huawei EulerOS 'samba' package(s) announced via the EulerOS-SA-2020-1032 advisory. Vulnerability Insight: A flaw was found in samba's Heimdal KDC implementation, versions 4.8.x up to, excluding 4.8.12, 4.9.x up to, excluding 4.9.8 and 4.10.x up to, excluding 4.10.3, when used in AD DC mode. A man in the middle attacker could use this flaw to intercept the request to the KDC and replace the user name (principal) in the request with any desired user name (principal) that exists in the KDC effectively obtaining a ticket for that principal.(CVE-2018-16860) All Samba versions 4.x.x before 4.9.17, 4.10.x before 4.10.11 and 4.11.x before 4.11.3 have an issue, where the (poorly named) dnsserver RPC pipe provides administrative facilities to modify DNS records and zones. Samba, when acting as an AD DC, stores DNS records in LDAP. In AD, the default permissions on the DNS partition allow creation of new records by authenticated users. This is used for example to allow machines to self-register in DNS. If a DNS record was created that case-insensitively matched the name of the zone, the ldb_qsort() and dns_name_compare() routines could be confused into reading memory prior to the list of DNS entries when responding to DnssrvEnumRecords() or DnssrvEnumRecords2() and so following invalid memory as a pointer.(CVE-2019-14861) All Samba versions 4.x.x before 4.9.17, 4.10.x before 4.10.11 and 4.11.x before 4.11.3 have an issue, where the S4U (MS-SFU) Kerberos delegation model includes a feature allowing for a subset of clients to be opted out of constrained delegation in any way, either S4U2Self or regular Kerberos authentication, by forcing all tickets for these clients to be non-forwardable. In AD this is implemented by a user attribute delegation_not_allowed (aka not-delegated), which translates to disallow-forwardable. However the Samba AD DC does not do that for S4U2Self and does set the forwardable flag even if the impersonated client has the not-delegated flag set.(CVE-2019-14870) A flaw was found in the samba client, all samba versions before samba 4.11.2, 4.10.10 and 4.9.15, where a malicious server can supply a pathname to the client with separators. This could allow the client to access files and folders outside of the SMB network pathnames. An attacker could use this vulnerability to create files outside of the current working directory using the privileges of the client user.(CVE-2019-10218) A flaw was found in the way an LDAP search expression could crash the shared LDAP server process of a samba AD DC. An authenticated user, having read permissions on the LDAP server, could use this flaw to cause denial of service.(CVE-2019-3824) Affected Software/OS: 'samba' package(s) on Huawei EulerOS V2.0SP8. Solution: Please install the updated package(s). CVSS Score: 6.4 CVSS Vector: AV:N/AC:L/Au:N/C:P/I:P/A:N
Referencia Cruzada:	Common Vulnerability Exposure (CVE) ID: CVE-2019-3824 BugTraq ID: 107347 http://www.securityfocus.com/bid/107347 Debian Security Information: DSA-4397 (Google Search) https://www.debian.org/security/2019/dsa-4397 https://bugzilla.samba.org/show_bug.cgi?id=13773 https://lists.debian.org/debian-lts-announce/2019/03/msg00000.html SuSE Security Announcement: openSUSE-SU-2019:1163 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00035.html https://usn.ubuntu.com/3895-1/
Copyright	Copyright (C) 2020 Greenbone Networks GmbH

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