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Vulnerability of Symantec: seven vulnerabilities of the "Decomposer" module

Synthesis of the vulnerability 

An attacker can use several vulnerabilities of Symantec products.
Impacted systems: Norton Antivirus Plus, Norton Internet Security, Norton Security, SEP, Symantec Mail Security, Symantec Web Gateway, SWS.
Severity of this alert: 4/4.
Number of vulnerabilities in this bulletin: 7.
Creation date: 29/06/2016.
Revision date: 29/06/2016.
Références of this alert: 810, 814, 816, 818, 819, 821, 823, CERTFR-2016-AVI-222, CVE-2016-2207, CVE-2016-2209, CVE-2016-2210, CVE-2016-2211, CVE-2016-3644, CVE-2016-3645, CVE-2016-3646, VIGILANCE-VUL-19997.

Description of the vulnerability 

Several vulnerabilities were announced in Symantec Endpoint Protection.

An attacker can generate a buffer overflow via a substream of MS-Office file, in order to trigger a denial of service, and possibly to run code. [severity:4/4; 823, CVE-2016-2209]

An attacker can force a read at an invalid address via ALPkOldFormatDecompressor::UnShrink, in order to trigger a denial of service, or to obtain sensitive information. [severity:2/4; 821, CVE-2016-3646]

An attacker can generate an integer overflow via Attachment::setDataFromAttachment, in order to trigger a denial of service, and possibly to run code. [severity:2/4; 819, CVE-2016-3645]

An attacker can generate a buffer overflow via CMIMEParser::UpdateHeader, in order to trigger a denial of service, and possibly to run code. [severity:3/4; 818, CVE-2016-3644]

An attacker can generate a memory corruption via a MSPACK archive, in order to trigger a denial of service, and possibly to run code. [severity:3/4; 816, CVE-2016-2211]

An attacker can generate a buffer overflow via CSymLHA::get_header, in order to trigger a denial of service, and possibly to run code. [severity:4/4; 814, CVE-2016-2210]

An attacker can generate a memory corruption via a RAR archive, in order to trigger a denial of service, and possibly to run code. [severity:3/4; 810, CVE-2016-2207]
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This security weakness impacts software or systems such as Norton Antivirus Plus, Norton Internet Security, Norton Security, SEP, Symantec Mail Security, Symantec Web Gateway, SWS.

Our Vigil@nce team determined that the severity of this threat bulletin is critical.

The trust level is of type confirmed by the editor, with an origin of document.

This bulletin is about 7 vulnerabilities.

A proof of concept or an attack tool is available, so your teams have to process this alert. An attacker with a beginner ability can exploit this threat.

Solutions for this threat 

Symantec: solution for the "Decomposer" module.
Fixed versions are indicated in information sources.
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