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Insecure Library Loading
Highly critical

Asterisk Denial of Service and Buffer Overflow Vulnerabilities

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Release Date:  2012-03-16    Last Update:  2012-05-30    Views:  3,499

Secunia Advisory SA48417

Where:

From remote

Impact:

DoS, System access

Solution Status:

Vendor Patch

CVE Reference(s):

Description


Two vulnerabilities have been reported in Asterisk, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially compromise a vulnerable system.

1) An error in the Milliwatt application within the "milliwatt_generate()" function (apps/app_milliwatt.c) when copying internal data samples can be exploited to cause a crash via specially crafted packets.

Successful exploitation of this vulnerability requires that Milliwatt is using the "o" option.

This vulnerability is reported in versions 1.4.x prior to 1.4.44, 1.6.x prior to 1.6.2.23, 1.8.x prior to 1.8.10.1, and 10.x prior to 10.2.1.

2) An error in the "ast_parse_digest()" function (main/utils.c) when handling "HTTP Digest Authentication" information can be exploited to cause a stack-based buffer overflow via an overly long string.

Successful exploitation of this vulnerability may allow execution of arbitrary code.

This vulnerability is reported in versions 1.8.x prior to 1.8.10.1 and 10.x prior to 10.2.1.


Solution:
Update to a fixed version.

Further details available to Secunia VIM customers

Provided and/or discovered by:
The vendor credits Russell Bryant.

Original Advisory:
http://downloads.asterisk.org/pub/security/AST-2012-002.html
http://downloads.asterisk.org/pub/security/AST-2012-003.html

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Asterisk Denial of Service and Buffer Overflow Vulnerabilities

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