Sourcefire VRT Certified Snort Rules Update 2012-03-13

[Research <research () sourcefire com>]

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Sourcefire VRT Certified Snort Rules Update

Synopsis:
The Sourcefire VRT is aware of vulnerabilities affecting products from
Microsoft Corporation.

Details:
Microsoft Security Advisory MS12-017:
The DNS protocol as implemented in Microsoft Windows systems may allow
a remote attacker to cause a permanent Denial of Service (Dos) against
an affected system.

A previously released rule will detect attacks targeting this
vulnerability and has been updated with the appropriate reference
information. It is included in this release and is identified with GID
1, SID 13949.

Microsoft Security Advisory MS12-020:
Microsoft Windows RemoteDesktop suffers from programming errors that
may allow a remote attacker to execute code on a vulnerable system.

Rules to detect attacks targeting these vulnerabilities are included in
this release and are identified with GID 1, SIDs 21570, 21571 and
21572.

Microsoft Security Advisory MS12-021:
Microsoft Visual Studio suffers from a programming error that may allow
a remote attacker to elevate privileges on a vulnerable system.

A rule to detect attacks targeting this vulnerability is included in
this release and is identified with GID 1, SID 21576.

Microsoft Security Advisory MS12-022:
Microsoft Expression Design suffers from a programming error that may
allow a remote attacker to execute code on a vulnerable system.

Rules to detect attacks targeting this vulnerability are included in
this release and are identified with GID 1, SIDs 21566 and 21567.

The Sourcefire VRT has also added and modified multiple rules in the
backdoor, blacklist, botnet-cnc, dns, dos, exploit, file-identify,
misc, netbios, policy, scada, specific-threats, web-activex, web-client
and web-php rule sets to provide coverage for emerging threats from
these technologies.

For a complete list of new and modified rules please see:

http://www.snort.org/vrt/docs/ruleset_changelogs/changes-2012-03-13.html
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