Exploitalert - Database of Exploits

T.38 asterisk 1.6.1.12 Remote Crash Vulnerability

CVE	Category	Price	Severity
CVE-2010-0441	CWE-399	N/A	High

Author	Risk	Exploitation Type	Date
Unknown	High	Remote	2010-02-07

CPE
cpe:cpe:/a:digium:asterisk:1.6.1.12

CVSS	EPSS	EPSSP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	0.7072	0.93362

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Network	AV	The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity	Low	AC	The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required	None	PR	The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction	None	UI	The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope	Unchanged	S	An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality	None	C	There is no impact on the confidentiality of the system; the attacker does not gain the ability to read any data.
Integrity	None	I	There is no impact on the integrity of the system; the attacker does not gain the ability to modify any files or information on the target system.
Availability	High	A	There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.

http://cxsecurity.com/ascii/WLB-2010020157

Asterisk Project Security Advisory - AST-2010-001 +----------------------------------------------------------------------- -+ | Product | Asterisk | |----------------------+------------------------------------------------ -| | Summary | T.38 Remote Crash Vulnerability | |----------------------+------------------------------------------------ -| | Nature of Advisory | Denial of Service | |----------------------+------------------------------------------------ -| | Susceptibility | Remote unauthenticated sessions | |----------------------+------------------------------------------------ -| | Severity | Critical | |----------------------+------------------------------------------------ -| | Exploits Known | No | |----------------------+------------------------------------------------ -| | Reported On | 12/03/09 | |----------------------+------------------------------------------------ -| | Reported By | issues.asterisk.org users bklang and elsto | |----------------------+------------------------------------------------ -| | Posted On | 02/03/10 | |----------------------+------------------------------------------------ -| | Last Updated On | February 2, 2010 | |----------------------+------------------------------------------------ -| | Advisory Contact | David Vossel < dvossel AT digium DOT com > | |----------------------+------------------------------------------------ -| | CVE Name | CVE-2010-0441 | +----------------------------------------------------------------------- -+ +----------------------------------------------------------------------- -+ | Description | An attacker attempting to negotiate T.38 over SIP can | | | remotely crash Asterisk by modifying the FaxMaxDatagram | | | field of the SDP to contain either a negative or | | | exceptionally large value. The same crash occurs when | | | the FaxMaxDatagram field is omitted from the SDP as | | | well. | +----------------------------------------------------------------------- -+ +----------------------------------------------------------------------- -+ | Resolution | Upgrade to one of the versions of Asterisk listed in the | | | "Corrected In" section, or apply a patch specified in the | | | "Patches" section. | +----------------------------------------------------------------------- -+ +----------------------------------------------------------------------- -+ | Affected Versions | |----------------------------------------------------------------------- -| | Product | Release Series | | |----------------------------------+----------------+------------------- -| | Asterisk Open Source | 1.6.x | All versions | |----------------------------------+----------------+------------------- -| | Asterisk Business Edition | C.3 | All versions | +----------------------------------------------------------------------- -+ +----------------------------------------------------------------------- -+ | Corrected In | |----------------------------------------------------------------------- -| | Product | Release | |------------------------------------------+---------------------------- -| | Asterisk Open Source | 1.6.0.22 | |------------------------------------------+---------------------------- -| | Asterisk Open Source | 1.6.1.14 | |------------------------------------------+---------------------------- -| | Asterisk Open Source | 1.6.2.2 | |------------------------------------------+---------------------------- -| | | C.3.3.2 | +----------------------------------------------------------------------- -+ +----------------------------------------------------------------------- --+ | Patches | |----------------------------------------------------------------------- --| | SVN URL |Branch| |------------------------------------------------------------------+---- --| |http://downloads.asterisk.org/pub/security/AST-2010-001-1.6.0.diff|v1.6 .0| |------------------------------------------------------------------+---- --| |http://downloads.asterisk.org/pub/security/AST-2010-001-1.6.1.diff|v1.6 .1| |------------------------------------------------------------------+---- --| |http://downloads.asterisk.org/pub/security/AST-2010-001-1.6.2.diff|v1.6 .2| +----------------------------------------------------------------------- --+ +----------------------------------------------------------------------- -+ | Links | https://issues.asterisk.org/view.php?id=16634 | | | | | | https://issues.asterisk.org/view.php?id=16724 | | | | | | https://issues.asterisk.org/view.php?id=16517 | +----------------------------------------------------------------------- -+ +----------------------------------------------------------------------- -+ | Asterisk Project Security Advisories are posted at | | http://www.asterisk.org/security | | | | This document may be superseded by later versions; if so, the latest | | version will be posted at | | http://downloads.digium.com/pub/security/.pdf and | | http://downloads.digium.com/pub/security/.html | +----------------------------------------------------------------------- -+ +----------------------------------------------------------------------- -+ | Revision History | |----------------------------------------------------------------------- -| | Date | Editor | Revisions Made | |----------------+----------------------+------------------------------- -| | 02/02/10 | David Vossel | Initial release | +----------------------------------------------------------------------- -+ Asterisk Project Security Advisory - AST-2010-001 Copyright (c) 2010 Digium, Inc. All Rights Reserved. Permission is hereby granted to distribute and publish this advisory in its original, unaltered form.

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