The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:2613 advisory.

    Samba is an open-source implementation of the Server Message Block (SMB) protocol and the related Common     Internet File System (CIFS) protocol, which allow PC-compatible machines to share files, printers, and     various information.

    Security Fix(es):

    * samba: Weak authentication protocol regression (CVE-2018-1139)

    * samba: Insufficient input validation in libsmbclient (CVE-2018-10858)

    * samba: Null pointer indirection in printer server process (CVE-2018-1050)

    Red Hat would like to thank the Samba project for reporting CVE-2018-1139 and CVE-2018-1050. Upstream     acknowledges Vivek Das (Red Hat) as the original reporter of CVE-2018-1139.

    For more details about the security issue(s), including the impact, a CVSS score, and other related     information, refer to the CVE page(s) listed in the References section.

    Bug Fix(es):

    * Previously, sharing a subdirectory of a Gluster volume failed with an I/O error when the shadow_copy2     vfs object was specified. This occurred because Gluster volumes are remote file systems, and shadow_copy2     only detected share paths in the local file system. This update forces the value of shadow:mountpath to     '/', skipping the code related to mount point detection, and preventing this problem. However, this fix     requires that the glusterfs vfs object is listed after the shadow_copy2 vfs object in the smb.conf file.
    (BZ#1379444)

    * As of Red Hat Gluster Storage 3.4, the libldb package is no longer shipped as an independent package in     the Red Hat Gluster Storage Samba channel. The capabilities of the libldb package are now provided by a     combination of the samba-client and samba-client-libs packages. In addition, the sub-packages previously     provided by libldb are now provided by the samba-client and samba-client-libs packages. The samba-client     sub-package provides ldb-tools, and the samba-client-libs sub-package provides pyldb. (BZ#1592794)

    Enhancement(s):

    * Red Hat Gluster Storage volumes exported using SMB can now be mounted on macOS clients using Finder.
    Configuration instructions are provided as part of the Red Hat Gluster Storage 3.4 documentation.
    (BZ#1446125)

    Red Hat strongly recommends upgrading to these updated packages.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

This update for samba fixes the following issues :

The following security issues were fixed :

CVE-2018-1050: Fixed denial of service vulnerability when SPOOLSS is run externally (bsc#1081741).

CVE-2018-10858: smbc_urlencode helper function is a subject to buffer overflow (bsc#1103411)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

A NULL pointer dereference flaw was found in Samba RPC external printer service. An attacker could use this flaw to cause the printer spooler service to crash.(CVE-2018-1050)

A heap-buffer overflow was found in the way samba clients processed extra long filename in a directory listing. A malicious samba server could use this flaw to cause arbitrary code execution on a samba client.(CVE-2018-10858)

A flaw was found in the way samba allowed the use of weak NTLMv1 authentication even when NTLMv1 was explicitly disabled. A man-in-the-middle attacker could use this flaw to read the credential and other details passed between the samba server and client.(CVE-2018-1139)

According to the versions of the samba packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - samba: Insufficient input validation in libsmbclient     (CVE-2018-10858)

  - samba: NULL pointer dereference in printer server     process (CVE-2018-1050)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Various vulnerabilities were discovered in Samba, SMB/CIFS file, print, and login server/client for Unix

CVE-2017-9461

smbd in Samba had a denial of service vulnerability (fd_open_atomic infinite loop with high CPU usage and memory consumption) due to wrongly handling dangling symlinks.

CVE-2018-1050

Samba was vulnerable to a denial of service attack when the RPC spoolss service was configured to be run as an external daemon.
Missing input sanitization checks on some of the input parameters to spoolss RPC calls could have caused the print spooler service to crash.

CVE-2018-1057

On a Samba 4 AD DC the LDAP server of Samba incorrectly validated permissions to modify passwords over LDAP allowing authenticated users to change any other users' passwords, including administrative users and privileged service accounts (eg Domain Controllers).

Thanks to the Ubuntu security team for having backported the rather invasive changeset to Samba in Ubuntu 14.04 (which we could use to patch Samba in Debian jessie LTS).

CVE-2019-3880

A flaw was found in the way Samba implemented an RPC endpoint emulating the Windows registry service API. An unprivileged attacker could have used this flaw to create a new registry hive file anywhere they had unix permissions which could have lead to creation of a new file in the Samba share.

For Debian 8 'Jessie', these problems have been fixed in version 2:4.2.14+dfsg-0+deb8u12.

We recommend that you upgrade your samba packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the samba packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - A null pointer dereference flaw was found in Samba RPC     external printer service. An attacker could use this     flaw to cause the printer spooler service to     crash.(CVE-2018-1050)

  - A heap-buffer overflow was found in the way samba     clients processed extra long filename in a directory     listing. A malicious samba server could use this flaw     to cause arbitrary code execution on a samba client.
    (CVE-2018-10858)

  - A use-after-free flaw was found in the way samba     servers handled certain SMB1 requests. An     unauthenticated attacker could send specially-crafted     SMB1 requests to cause the server to crash or execute     arbitrary code.(CVE-2017-14746)

  - A memory disclosure flaw was found in samba. An     attacker could retrieve parts of server memory, which     could contain potentially sensitive data, by sending     specially-crafted requests to the samba     server.(CVE-2017-15275)

  - It was found that samba did not enforce 'SMB signing'     when certain configuration options were enabled. A     remote attacker could launch a man-in-the-middle attack     and retrieve information in plain-text.(CVE-2017-12150)

  - A flaw was found in the way samba client used     encryption with the max protocol set as SMB3. The     connection could lose the requirement for signing and     encrypting to any DFS redirects, allowing an attacker     to read or alter the contents of the connection via a     man-in-the-middle attack.(CVE-2017-12151)

  - An information leak flaw was found in the way SMB1     protocol was implemented by Samba. A malicious client     could use this flaw to dump server memory contents to a     file on the samba share or to a shared printer, though     the exact area of server memory cannot be controlled by     the attacker.(CVE-2017-12163)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Published	Updated	Severity
117320	RHEL 7 : samba (RHSA-2018:2613)	Nessus	Red Hat Local Security Checks	9/6/2018	11/5/2024	high
118282	SUSE SLES12 Security Update : samba (SUSE-SU-2018:2339-2)	Nessus	SuSE Local Security Checks	10/22/2018	2/4/2022	high
119781	Amazon Linux 2 : samba (ALAS-2018-1126)	Nessus	Amazon Linux Local Security Checks	12/20/2018	7/15/2024	high
123599	EulerOS 2.0 SP2 : samba (EulerOS-SA-2019-1125)	Nessus	Huawei Local Security Checks	4/2/2019	6/6/2024	high
123624	EulerOS 2.0 SP5 : samba (EulerOS-SA-2019-1150)	Nessus	Huawei Local Security Checks	4/2/2019	6/6/2024	high
123959	Debian DLA-1754-1 : samba security update	Nessus	Debian Local Security Checks	4/10/2019	6/4/2024	high
124911	EulerOS Virtualization for ARM 64 3.0.1.0 : samba (EulerOS-SA-2019-1408)	Nessus	Huawei Local Security Checks	5/14/2019	5/23/2024	critical

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