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Vulnerability of Symantec Endpoint Protection: buffer overflow of sysplant

Synthesis of the vulnerability 

An attacker can generate a buffer overflow in sysplant of Symantec Endpoint Protection, in order to trigger a denial of service, and possibly to execute code.
Impacted software: SEP.
Severity of this computer vulnerability: 3/4.
Creation date: 05/08/2014.
Références of this announce: CVE-2014-3434, SYM14-013, TECH223338, VIGILANCE-VUL-15124, VU#252068.

Description of the vulnerability 

The Symantec Endpoint Protection include a device driver that is reachable by "ioctl" commands.

However, for some commands, the driver does not handle the length of exchange data, which allows the caller process to inject code into the buffer.

An attacker can therefore generate a buffer overflow in sysplant of Symantec Endpoint Protection, in order to trigger a denial of service, and possibly to execute code with the kernel privileges.
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This computer threat impacts software or systems such as SEP.

Our Vigil@nce team determined that the severity of this computer vulnerability alert is important.

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

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

Solutions for this threat 

Symantec Endpoint Protection: fixed versions.
Fixed versions are indicated in information sources. The applicable version varies according to which version is already installed.

Symantec Endpoint Protection: workaround for sysplant.
A workaround is indicated in the information source.
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