VRT Advisories

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VRT Rules 2007-07-10

Sourcefire VRT Rules Update

Date: 2007-07-10

Synopsis:

The Sourcefire VRT is aware of vulnerabilities affecting hosts using Microsoft IIS, Microsoft Windows Firewall and the Microsoft .NET Framework.

Details:

Microsoft Security Bulletin MS07-041:
Microsoft Internet Information Services (IIS) contains a programming error that may allow an attacker to execute code on a vulnerable system. The problem occurs in the processing of URLs, in that a malformed request may cause a null pointer dereference and present the attacker with the opportunity to execute code in the context of the user running the service.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 12064.

Microsoft Security Bulletin MS07-040:
The Microsoft .NET Framework suffers from a vulnerability that may allow a remote attacker to compromise a host using the Framework.

A previously released rule will detect attacks targeting this vulnerability and is identified as SID 11192.

Microsoft Security Bulletin MS07-038:
The Microsoft Windows Firewall fails to correctly handle IPv6 packets when tunnelled over UDP to traverse an IPv4 Network Address Translation. This may allow an attacker to initiate network communications with a host and bypass any Microsoft Windows based firewalls in the process.

Rules to detect attacks targeting this vulnerability are included in this release and are identified as SIDs 12065 through 12068.

Additionally, SID 8446 may also generate events on IPv6 traffic encapsulated in IPv4.

Rule Pack Summary:

For a complete list of new and modified rules, click here.

Warning:

Sourcefire VRT rule packs often utilize enhancements made to Snort. Operators should upgrade to the latest revision or patch level for Snort to ensure these enhancements are available before using these rules.

About the VRT:

The Sourcefire VRT is a group of leading edge intrusion detection and prevention experts working to proactively discover, assess and respond to the latest trends in hacking activity, intrusion attempts and vulnerabilities. This team is also supported by the vast resources of the open source Snort community, making it the largest group dedicated to advances in the network security industry.

Posted by on Jul 10, 2007



VRT Rules 2007-07-03

Sourcefire VRT Rules Update

Date: 2007-07-03

Synopsis:

The Sourcefire VRT is aware of vulnerabilities affecting the Ingres database server and the MIT Kerberos Authentication Daemon.

Details:

Ingres Database Buffer Overflow (CVE-2007-3338):
Ingres Database suffers from a programming error that may allow remote attackers to overflow a fixed length buffer and execute code on a vulnerable system.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 12027.

MIT Kerberos Administration Daemon Buffer Overflow (CVE-2007-2443):
MIT Kerberos kadmind suffers from a programming error that may allow remote attackers to overflow a fixed length buffer and execute code on a vulnerable system. The error occurs in the RPC library and affects any product using this code.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 12027.

Rule Pack Summary:

For a complete list of new and modified rules, click here.

Warning:

Sourcefire VRT rule packs often utilize enhancements made to Snort. Operators should upgrade to the latest revision or patch level for Snort to ensure these enhancements are available before using these rules.

About the VRT:

The Sourcefire VRT is a group of leading edge intrusion detection and prevention experts working to proactively discover, assess and respond to the latest trends in hacking activity, intrusion attempts and vulnerabilities. This team is also supported by the vast resources of the open source Snort community, making it the largest group dedicated to advances in the network security industry.

Posted by on Jul 03, 2007



VRT Rules 2007-06-26

Sourcefire VRT Rules Update

Date: 2007-06-26

Synopsis:

The Sourcefire VRT is aware of vulnerabilities affecting Firebird SQL database server and Microsoft Internet Explorer.

Details:

Firebird SQL Remote Buffer Overflow (CVE-2007-3181):
Firebird SQL suffers from a programming error that may allow remote attackers to overflow a fixed length buffer and execute code on a vulnerable system.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 12009.

Microsoft Internet Explorer CSS Code Execution (CVE-2007-1750):
Microsoft Internet Explorer suffers from poor programming that may allow remote attackers to execute code by using a specially crafted Cascading Style Sheets (CSS) tag.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 11967.

Microsoft Internet Explorer URL Spoofing (CVE-2007-1499):
Microsoft Internet Explorer is vulnerable to phishing attacks when a URL is passed as an argument via a res: URI.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 12014.

Rule Pack Summary:

For a complete list of new and modified rules, click here.

Warning:

Sourcefire VRT rule packs often utilize enhancements made to Snort. Operators should upgrade to the latest revision or patch level for Snort to ensure these enhancements are available before using these rules.

About the VRT:

The Sourcefire VRT is a group of leading edge intrusion detection and prevention experts working to proactively discover, assess and respond to the latest trends in hacking activity, intrusion attempts and vulnerabilities. This team is also supported by the vast resources of the open source Snort community, making it the largest group dedicated to advances in the network security industry.

Posted by on Jun 26, 2007



VRT Rules 2007-06-19

Sourcefire VRT Rules Update

Date: 2007-06-19

Synopsis:

The Sourcefire VRT has added rules to the Backdoor and Spyware-put categories and has also improved detection functionality for the Samba call_trans2open buffer overflow vulnerability.

Details:

As a result of ongoing research, the Sourcefire VRT has added rules to the Backdoor and Spyware-put categories.

Samba call_trans2open Buffer Overflow (CVE-2003-0201):
The Sourcefire VRT has improved detection functionality for the Samba call_trans2open buffer overflow vulnerability.

The Samba network file server suffers from a programming error that may allow an attacker to execute code on a vulnerable host via a long pathname argument in a trans2open request.

Rules to detect attacks targeting this vulnerability are included in this release and are identified as SIDs 11955 through 11964.

Rule Pack Summary:

For a complete list of new and modified rules, click here.

Warning:

Sourcefire VRT rule packs often utilize enhancements made to Snort. Operators should upgrade to the latest revision or patch level for Snort to ensure these enhancements are available before using these rules.

About the VRT:

The Sourcefire VRT is a group of leading edge intrusion detection and prevention experts working to proactively discover, assess and respond to the latest trends in hacking activity, intrusion attempts and vulnerabilities. This team is also supported by the vast resources of the open source Snort community, making it the largest group dedicated to advances in the network security industry.

Posted by on Jun 19, 2007



VRT Rules 2007-06-13

Sourcefire VRT Rules Update

Date: 2007-06-13

Synopsis:

The Sourcefire VRT is aware of vulnerabilities affecting hosts using Microsoft products.

Details:

Microsoft Security Bulletin MS07-031:
The Windows Schannel Security Package may allow a remote attacker to execute code on an affected host. The issue occurs when processing certificate files during an SSL handshake.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 11947.

Microsoft Security Bulletin MS07-035:
The Microsoft Windows Win32 API fails to correctly handle user-supplied data. This may allow a remote attacker to execute code on a vulnerable system.

A rule to detect attacks targeting this vulnerability is included in this release and is identified as SID 11838.

Rule Pack Summary:

For a complete list of new and modified rules, click here.

Warning:

Sourcefire VRT rule packs often utilize enhancements made to Snort. Operators should upgrade to the latest revision or patch level for Snort to ensure these enhancements are available before using these rules.

About the VRT:

The Sourcefire VRT is a group of leading edge intrusion detection and prevention experts working to proactively discover, assess and respond to the latest trends in hacking activity, intrusion attempts and vulnerabilities. This team is also supported by the vast resources of the open source Snort community, making it the largest group dedicated to advances in the network security industry.

Posted by on Jun 13, 2007



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