Fedora 20 : asterisk-11.10.2-2.fc20 (2014-7551)

medium Nessus Plugin ID 77768

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Synopsis

The remote Fedora host is missing a security update.

Description

The Asterisk Development Team has announced security releases for Certified Asterisk 1.8.15, 11.6, and Asterisk 1.8, 11, and 12. The available security releases are released as versions 1.8.15-cert7, 11.6-cert4, 1.8.28.2, 11.10.2, and 12.3.2.

These releases are available for immediate download at http://downloads.asterisk.org/pub/telephony/asterisk/releases

These releases resolve security vulnerabilities that were previously fixed in 1.8.15-cert6, 11.6-cert3, 1.8.28.1, 11.10.1, and 12.3.1.
Unfortunately, the fix for AST-2014-007 inadvertently introduced a regression in Asterisk's TCP and TLS handling that prevented Asterisk from sending data over these transports. This regression and the security vulnerabilities have been fixed in the versions specified in this release announcement.

The security patches for AST-2014-007 have been updated with the fix for the regression, and are available at http://downloads.asterisk.org/pub/security

Please note that the release of these versions resolves the following security vulnerabilities :

- AST-2014-005: Remote Crash in PJSIP Channel Driver's Publish/Subscribe Framework

- AST-2014-006: Permission Escalation via Asterisk Manager User Unauthorized Shell Access

- AST-2014-007: Denial of Service via Exhaustion of Allowed Concurrent HTTP Connections

- AST-2014-008: Denial of Service in PJSIP Channel Driver Subscriptions

For more information about the details of these vulnerabilities, please read security advisories AST-2014-005, AST-2014-006, AST-2014-007, and AST-2014-008, which were released with the previous versions that addressed these vulnerabilities.

For a full list of changes in the current releases, please see the ChangeLogs :

http://downloads.asterisk.org/pub/telephony/certified-asterisk/release s/ChangeLog-1.8.15-cert7 http://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLo g-1.8.28.2 http://downloads.asterisk.org/pub/telephony/certified-asterisk/release s/ChangeLog-11.6-cert4 http://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLo g-11.10.2 http://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLo g-12.3.2

The security advisories are available at :

- http://downloads.asterisk.org/pub/security/AST-2014-005.
pdf

- http://downloads.asterisk.org/pub/security/AST-2014-00 6.pdf

- http://downloads.asterisk.org/pub/security/AST-2014-00 7.pdf

- http://downloads.asterisk.org/pub/security/AST-2014-00 8.pdf

The Asterisk Development Team has announced security releases for Certified Asterisk 1.8.15, 11.6, and Asterisk 1.8, 11, and 12. The available security releases are released as versions 1.8.15-cert6, 11.6-cert3, 1.8.28.1, 11.10.1, and 12.3.1.

These releases are available for immediate download at http://downloads.asterisk.org/pub/telephony/asterisk/releases

The release of these versions resolves the following issue :

- AST-2014-007: Denial of Service via Exhaustion of Allowed Concurrent HTTP Connections

Establishing a TCP or TLS connection to the configured HTTP or HTTPS port respectively in http.conf and then not sending or completing a HTTP request will tie up a HTTP session. By doing this repeatedly until the maximum number of open HTTP sessions is reached, legitimate requests are blocked.

Additionally, the release of 11.6-cert3, 11.10.1, and 12.3.1 resolves the following issue :

- AST-2014-006: Permission Escalation via Asterisk Manager User Unauthorized Shell Access

Manager users can execute arbitrary shell commands with the MixMonitor manager action. Asterisk does not require system class authorization for a manager user to use the MixMonitor action, so any manager user who is permitted to use manager commands can potentially execute shell commands as the user executing the Asterisk process.

Additionally, the release of 12.3.1 resolves the following issues :

- AST-2014-005: Remote Crash in PJSIP Channel Driver's Publish/Subscribe Framework

A remotely exploitable crash vulnerability exists in the PJSIP channel driver's pub/sub framework. If an attempt is made to unsubscribe when not currently subscribed and the endpoint's 'sub_min_expiry' is set to zero, Asterisk tries to create an expiration timer with zero seconds, which is not allowed, so an assertion raised.

- AST-2014-008: Denial of Service in PJSIP Channel Driver Subscriptions

When a SIP transaction timeout caused a subscription to be terminated, the action taken by Asterisk was guaranteed to deadlock the thread on which SIP requests are serviced. Note that this behavior could only happen on established subscriptions, meaning that this could only be exploited if an attacker bypassed authentication and successfully subscribed to a real resource on the Asterisk server.

These issues and their resolutions are described in the security advisories.

For more information about the details of these vulnerabilities, please read security advisories AST-2014-005, AST-2014-006, AST-2014-007, and AST-2014-008, which were released at the same time as this announcement.

For a full list of changes in the current releases, please see the ChangeLogs :

http://downloads.asterisk.org/pub/telephony/certified-asterisk/release s/ChangeLog-1.8.15-cert6 http://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLo g-1.8.28.1 http://downloads.asterisk.org/pub/telephony/certified-asterisk/release s/ChangeLog-11.6-cert3 http://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLo g-11.10.1 http://downloads.asterisk.org/pub/telephony/asterisk/releases/ChangeLo g-12.3.1

The Asterisk Development Team has announced the release of Asterisk 11.10.0. This release is available for immediate download at http://downloads.asterisk.org/pub/telephony/asterisk

The release of Asterisk 11.10.0 resolves several issues reported by the community and would have not been possible without your participation. Thank you!

The following are the issues resolved in this release :

Bugs fixed in this release :

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

Solution

Update the affected asterisk package.

Plugin Details

Severity: Medium

ID: 77768

File Name: fedora_2014-7551.nasl

Version: 1.8

Type: local

Agent: unix

Family: Fedora Local Security Checks

Published: 9/22/2014

Updated: 1/11/2021

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 4.4

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

Vulnerability Information

CPE: cpe:/o:fedoraproject:fedora:20, p-cpe:/a:fedoraproject:fedora:asterisk

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/21/2014

Vulnerability Publication Date: 6/17/2014

Reference Information

CVE: CVE-2014-4047

BID: 68036

FEDORA: 2014-7551

Detections

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