RHEL 7 : tcmu-runner (RHSA-2017:3277)

high Nessus Plugin ID 104865

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Synopsis

The remote Red Hat host is missing one or more security updates for tcmu-runner.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2017:3277 advisory.

The tcmu-runner packages provide a service that handles the complexity of the LIO kernel target's userspace passthrough interface (TCMU). It presents a C plugin API for extension modules that handle SCSI requests in ways not possible or suitable to be handled by LIO's in-kernel backstores.

Security Fix(es):

* A flaw was found in the implementation of CheckConfig method in handler_glfs.so of the tcmu-runner daemon. A local, non-root user with access to the D-Bus system bus could send a specially crafted string to CheckConfig method resulting in various kinds of segmentation fault. (CVE-2017-1000198)

* A NULL pointer dereference flaw was found in the UnregisterHandler method implemented in the tcmu-runner daemon. A local, non-root user with access to the D-Bus system bus could call the UnregisterHandler method with the name of a handler loaded internally in tcmu-runner via dlopen() to trigger DoS.
(CVE-2017-1000200)

* A NULL pointer dereference flaw was found in the UnregisterHandler method implemented in the tcmu-runner daemon. A local, non-root user with access to the D-Bus system bus could call UnregisterHandler method with non-existing tcmu handler as paramater to trigger DoS. (CVE-2017-1000201)

* A file information leak flaw was found in implementation of the CheckConfig method in handler_qcow.so of the tcmu-runner daemon. A local, non-root user with access to the D-Bus system bus could use this flaw to leak arbitrary file names which might not be retrievable by non-root user. (CVE-2017-1000199)

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.

Solution

Update the RHEL tcmu-runner package based on the guidance in RHSA-2017:3277.

Plugin Details

Severity: High

ID: 104865

File Name: redhat-RHSA-2017-3277.nasl

Version: 3.10

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 11/30/2017

Updated: 6/3/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS Score Source: CVE-2017-1000199

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:tcmu-runner, p-cpe:/a:redhat:enterprise_linux:libtcmu-devel, p-cpe:/a:redhat:enterprise_linux:libtcmu, cpe:/o:redhat:enterprise_linux:7

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 11/29/2017

Vulnerability Publication Date: 11/17/2017

Reference Information

CVE: CVE-2017-1000198, CVE-2017-1000199, CVE-2017-1000200, CVE-2017-1000201

CWE: 200, 416, 476

RHSA: 2017:3277

Detections

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