Talos Rules 2021-04-29
This release adds and modifies rules in several categories.

Talos has added and modified multiple rules in the browser-ie, file-other and server-webapp rule sets to provide coverage for emerging threats from these technologies.

Change logs

2021-04-29 17:52:56 UTC

Snort Subscriber Rules Update

Date: 2021-04-29

This is the complete list of rules modified and added in the Sourcefire VRT Certified rule pack for Snort version 2091701.

The format of the file is:

gid:sid <-> Default rule state <-> Message (rule group)

New Rules:


 * 1:57481 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57482 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57483 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57484 <-> DISABLED <-> BROWSER-IE Microsoft Internet Explorer CSS .ipsum layout use-after-free attempt (browser-ie.rules)
 * 1:57485 <-> DISABLED <-> BROWSER-IE Microsoft Internet Explorer CSS .ipsum layout use-after-free attempt (browser-ie.rules)
 * 1:57487 <-> DISABLED <-> SERVER-WEBAPP Microsoft Exchange MeetingHandler remote code execution attempt (server-webapp.rules)
 * 3:57486 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD Web Service buffer overflow attempt (server-webapp.rules)
 * 3:57488 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD WebVPN denial of service attempt (server-webapp.rules)
 * 3:57489 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD WebVPN denial of service attempt (server-webapp.rules)

Modified Rules:


 * 1:43297 <-> DISABLED <-> SERVER-OTHER Cisco IOS HTTP percent sign denial of service attempt (server-other.rules)
 * 1:16004 <-> DISABLED <-> FILE-OTHER Apple Mac OS X installer package filename format string vulnerability (file-other.rules)
 * 1:32753 <-> DISABLED <-> SERVER-WEBAPP FreePBX Framework Asterisk recording interface PHP unserialize code execution attempt (server-webapp.rules)

2021-04-29 17:52:56 UTC

Snort Subscriber Rules Update

Date: 2021-04-29

This is the complete list of rules modified and added in the Sourcefire VRT Certified rule pack for Snort version 2091700.

The format of the file is:

gid:sid <-> Default rule state <-> Message (rule group)

New Rules:


 * 1:57481 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57483 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57485 <-> DISABLED <-> BROWSER-IE Microsoft Internet Explorer CSS .ipsum layout use-after-free attempt (browser-ie.rules)
 * 1:57482 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57487 <-> DISABLED <-> SERVER-WEBAPP Microsoft Exchange MeetingHandler remote code execution attempt (server-webapp.rules)
 * 1:57484 <-> DISABLED <-> BROWSER-IE Microsoft Internet Explorer CSS .ipsum layout use-after-free attempt (browser-ie.rules)
 * 3:57486 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD Web Service buffer overflow attempt (server-webapp.rules)
 * 3:57488 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD WebVPN denial of service attempt (server-webapp.rules)
 * 3:57489 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD WebVPN denial of service attempt (server-webapp.rules)

Modified Rules:


 * 1:16004 <-> DISABLED <-> FILE-OTHER Apple Mac OS X installer package filename format string vulnerability (file-other.rules)
 * 1:32753 <-> DISABLED <-> SERVER-WEBAPP FreePBX Framework Asterisk recording interface PHP unserialize code execution attempt (server-webapp.rules)
 * 1:43297 <-> DISABLED <-> SERVER-OTHER Cisco IOS HTTP percent sign denial of service attempt (server-other.rules)

2021-04-29 17:52:56 UTC

Snort Subscriber Rules Update

Date: 2021-04-29

This is the complete list of rules modified and added in the Sourcefire VRT Certified rule pack for Snort version 2091601.

The format of the file is:

gid:sid <-> Default rule state <-> Message (rule group)

New Rules:


 * 1:57483 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57481 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57487 <-> DISABLED <-> SERVER-WEBAPP Microsoft Exchange MeetingHandler remote code execution attempt (server-webapp.rules)
 * 1:57485 <-> DISABLED <-> BROWSER-IE Microsoft Internet Explorer CSS .ipsum layout use-after-free attempt (browser-ie.rules)
 * 1:57482 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57484 <-> DISABLED <-> BROWSER-IE Microsoft Internet Explorer CSS .ipsum layout use-after-free attempt (browser-ie.rules)
 * 3:57486 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD Web Service buffer overflow attempt (server-webapp.rules)
 * 3:57489 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD WebVPN denial of service attempt (server-webapp.rules)
 * 3:57488 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD WebVPN denial of service attempt (server-webapp.rules)

Modified Rules:


 * 1:32753 <-> DISABLED <-> SERVER-WEBAPP FreePBX Framework Asterisk recording interface PHP unserialize code execution attempt (server-webapp.rules)
 * 1:16004 <-> DISABLED <-> FILE-OTHER Apple Mac OS X installer package filename format string vulnerability (file-other.rules)
 * 1:43297 <-> DISABLED <-> SERVER-OTHER Cisco IOS HTTP percent sign denial of service attempt (server-other.rules)

2021-04-29 17:52:56 UTC

Snort Subscriber Rules Update

Date: 2021-04-29

This is the complete list of rules modified and added in the Sourcefire VRT Certified rule pack for Snort version 2091600.

The format of the file is:

gid:sid <-> Default rule state <-> Message (rule group)

New Rules:


 * 1:57484 <-> DISABLED <-> BROWSER-IE Microsoft Internet Explorer CSS .ipsum layout use-after-free attempt (browser-ie.rules)
 * 1:57487 <-> DISABLED <-> SERVER-WEBAPP Microsoft Exchange MeetingHandler remote code execution attempt (server-webapp.rules)
 * 1:57482 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57485 <-> DISABLED <-> BROWSER-IE Microsoft Internet Explorer CSS .ipsum layout use-after-free attempt (browser-ie.rules)
 * 1:57481 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57483 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 3:57486 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD Web Service buffer overflow attempt (server-webapp.rules)
 * 3:57488 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD WebVPN denial of service attempt (server-webapp.rules)
 * 3:57489 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD WebVPN denial of service attempt (server-webapp.rules)

Modified Rules:


 * 1:43297 <-> DISABLED <-> SERVER-OTHER Cisco IOS HTTP percent sign denial of service attempt (server-other.rules)
 * 1:16004 <-> DISABLED <-> FILE-OTHER Apple Mac OS X installer package filename format string vulnerability (file-other.rules)
 * 1:32753 <-> DISABLED <-> SERVER-WEBAPP FreePBX Framework Asterisk recording interface PHP unserialize code execution attempt (server-webapp.rules)

2021-04-29 17:52:56 UTC

Snort Subscriber Rules Update

Date: 2021-04-29

This is the complete list of rules modified and added in the Sourcefire VRT Certified rule pack for Snort version 2091501.

The format of the file is:

gid:sid <-> Default rule state <-> Message (rule group)

New Rules:


 * 1:57481 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57483 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57487 <-> DISABLED <-> SERVER-WEBAPP Microsoft Exchange MeetingHandler remote code execution attempt (server-webapp.rules)
 * 1:57482 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57484 <-> DISABLED <-> BROWSER-IE Microsoft Internet Explorer CSS .ipsum layout use-after-free attempt (browser-ie.rules)
 * 1:57485 <-> DISABLED <-> BROWSER-IE Microsoft Internet Explorer CSS .ipsum layout use-after-free attempt (browser-ie.rules)
 * 3:57486 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD Web Service buffer overflow attempt (server-webapp.rules)
 * 3:57488 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD WebVPN denial of service attempt (server-webapp.rules)
 * 3:57489 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD WebVPN denial of service attempt (server-webapp.rules)

Modified Rules:


 * 1:43297 <-> DISABLED <-> SERVER-OTHER Cisco IOS HTTP percent sign denial of service attempt (server-other.rules)
 * 1:32753 <-> DISABLED <-> SERVER-WEBAPP FreePBX Framework Asterisk recording interface PHP unserialize code execution attempt (server-webapp.rules)
 * 1:16004 <-> DISABLED <-> FILE-OTHER Apple Mac OS X installer package filename format string vulnerability (file-other.rules)

2021-04-29 17:52:56 UTC

Snort Subscriber Rules Update

Date: 2021-04-29

This is the complete list of rules modified and added in the Sourcefire VRT Certified rule pack for Snort version 2091500.

The format of the file is:

gid:sid <-> Default rule state <-> Message (rule group)

New Rules:


 * 1:57481 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57482 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57483 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57484 <-> DISABLED <-> BROWSER-IE Microsoft Internet Explorer CSS .ipsum layout use-after-free attempt (browser-ie.rules)
 * 1:57485 <-> DISABLED <-> BROWSER-IE Microsoft Internet Explorer CSS .ipsum layout use-after-free attempt (browser-ie.rules)
 * 1:57487 <-> DISABLED <-> SERVER-WEBAPP Microsoft Exchange MeetingHandler remote code execution attempt (server-webapp.rules)
 * 3:57486 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD Web Service buffer overflow attempt (server-webapp.rules)
 * 3:57489 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD WebVPN denial of service attempt (server-webapp.rules)
 * 3:57488 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD WebVPN denial of service attempt (server-webapp.rules)

Modified Rules:


 * 1:16004 <-> DISABLED <-> FILE-OTHER Apple Mac OS X installer package filename format string vulnerability (file-other.rules)
 * 1:43297 <-> DISABLED <-> SERVER-OTHER Cisco IOS HTTP percent sign denial of service attempt (server-other.rules)
 * 1:32753 <-> DISABLED <-> SERVER-WEBAPP FreePBX Framework Asterisk recording interface PHP unserialize code execution attempt (server-webapp.rules)

2021-04-29 17:52:56 UTC

Snort Subscriber Rules Update

Date: 2021-04-29

This is the complete list of rules modified and added in the Sourcefire VRT Certified rule pack for Snort version 2091401.

The format of the file is:

gid:sid <-> Default rule state <-> Message (rule group)

New Rules:


 * 1:57485 <-> DISABLED <-> BROWSER-IE Microsoft Internet Explorer CSS .ipsum layout use-after-free attempt (browser-ie.rules)
 * 1:57481 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57487 <-> DISABLED <-> SERVER-WEBAPP Microsoft Exchange MeetingHandler remote code execution attempt (server-webapp.rules)
 * 1:57482 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57484 <-> DISABLED <-> BROWSER-IE Microsoft Internet Explorer CSS .ipsum layout use-after-free attempt (browser-ie.rules)
 * 1:57483 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 3:57486 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD Web Service buffer overflow attempt (server-webapp.rules)
 * 3:57488 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD WebVPN denial of service attempt (server-webapp.rules)
 * 3:57489 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD WebVPN denial of service attempt (server-webapp.rules)

Modified Rules:


 * 1:16004 <-> DISABLED <-> FILE-OTHER Apple Mac OS X installer package filename format string vulnerability (file-other.rules)
 * 1:43297 <-> DISABLED <-> SERVER-OTHER Cisco IOS HTTP percent sign denial of service attempt (server-other.rules)
 * 1:32753 <-> DISABLED <-> SERVER-WEBAPP FreePBX Framework Asterisk recording interface PHP unserialize code execution attempt (server-webapp.rules)

2021-04-29 17:52:56 UTC

Snort Subscriber Rules Update

Date: 2021-04-29

This is the complete list of rules modified and added in the Sourcefire VRT Certified rule pack for Snort version 2091300.

The format of the file is:

gid:sid <-> Default rule state <-> Message (rule group)

New Rules:


 * 1:57482 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57483 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57487 <-> DISABLED <-> SERVER-WEBAPP Microsoft Exchange MeetingHandler remote code execution attempt (server-webapp.rules)
 * 1:57484 <-> DISABLED <-> BROWSER-IE Microsoft Internet Explorer CSS .ipsum layout use-after-free attempt (browser-ie.rules)
 * 1:57485 <-> DISABLED <-> BROWSER-IE Microsoft Internet Explorer CSS .ipsum layout use-after-free attempt (browser-ie.rules)
 * 1:57481 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 3:57486 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD Web Service buffer overflow attempt (server-webapp.rules)
 * 3:57488 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD WebVPN denial of service attempt (server-webapp.rules)
 * 3:57489 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD WebVPN denial of service attempt (server-webapp.rules)

Modified Rules:


 * 1:43297 <-> DISABLED <-> SERVER-OTHER Cisco IOS HTTP percent sign denial of service attempt (server-other.rules)
 * 1:16004 <-> DISABLED <-> FILE-OTHER Apple Mac OS X installer package filename format string vulnerability (file-other.rules)
 * 1:32753 <-> DISABLED <-> SERVER-WEBAPP FreePBX Framework Asterisk recording interface PHP unserialize code execution attempt (server-webapp.rules)

2021-04-29 17:52:56 UTC

Snort Subscriber Rules Update

Date: 2021-04-29

This is the complete list of rules modified and added in the Sourcefire VRT Certified rule pack for Snort version 2091101.

The format of the file is:

gid:sid <-> Default rule state <-> Message (rule group)

New Rules:


 * 1:57481 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57482 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57484 <-> DISABLED <-> BROWSER-IE Microsoft Internet Explorer CSS .ipsum layout use-after-free attempt (browser-ie.rules)
 * 1:57487 <-> DISABLED <-> SERVER-WEBAPP Microsoft Exchange MeetingHandler remote code execution attempt (server-webapp.rules)
 * 1:57485 <-> DISABLED <-> BROWSER-IE Microsoft Internet Explorer CSS .ipsum layout use-after-free attempt (browser-ie.rules)
 * 1:57483 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 3:57486 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD Web Service buffer overflow attempt (server-webapp.rules)
 * 3:57488 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD WebVPN denial of service attempt (server-webapp.rules)
 * 3:57489 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD WebVPN denial of service attempt (server-webapp.rules)

Modified Rules:


 * 1:16004 <-> DISABLED <-> FILE-OTHER Apple Mac OS X installer package filename format string vulnerability (file-other.rules)
 * 1:43297 <-> DISABLED <-> SERVER-OTHER Cisco IOS HTTP percent sign denial of service attempt (server-other.rules)
 * 1:32753 <-> DISABLED <-> SERVER-WEBAPP FreePBX Framework Asterisk recording interface PHP unserialize code execution attempt (server-webapp.rules)

2021-04-29 17:52:56 UTC

Snort Subscriber Rules Update

Date: 2021-04-29

This is the complete list of rules modified and added in the Sourcefire VRT Certified rule pack for Snort version 3000.

The format of the file is:

gid:sid <-> Default rule state <-> Message (rule group)

New Rules:


 * 1:57484 <-> DISABLED <-> BROWSER-IE Microsoft Internet Explorer CSS .ipsum layout use-after-free attempt (snort3-browser-ie.rules)
 * 1:57483 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (snort3-server-webapp.rules)
 * 1:57482 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (snort3-server-webapp.rules)
 * 1:57485 <-> DISABLED <-> BROWSER-IE Microsoft Internet Explorer CSS .ipsum layout use-after-free attempt (snort3-browser-ie.rules)
 * 1:57487 <-> DISABLED <-> SERVER-WEBAPP Microsoft Exchange MeetingHandler remote code execution attempt (snort3-server-webapp.rules)
 * 1:57481 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (snort3-server-webapp.rules)

Modified Rules:


 * 1:43297 <-> DISABLED <-> SERVER-OTHER Cisco IOS HTTP percent sign denial of service attempt (snort3-server-other.rules)
 * 1:16004 <-> DISABLED <-> FILE-OTHER Apple Mac OS X installer package filename format string vulnerability (snort3-file-other.rules)
 * 1:32753 <-> DISABLED <-> SERVER-WEBAPP FreePBX Framework Asterisk recording interface PHP unserialize code execution attempt (snort3-server-webapp.rules)

2021-04-29 17:52:56 UTC

Snort Subscriber Rules Update

Date: 2021-04-29

This is the complete list of rules modified and added in the Sourcefire VRT Certified rule pack for Snort version 2983.

The format of the file is:

gid:sid <-> Default rule state <-> Message (rule group)

New Rules:


 * 1:57482 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57487 <-> DISABLED <-> SERVER-WEBAPP Microsoft Exchange MeetingHandler remote code execution attempt (server-webapp.rules)
 * 1:57484 <-> DISABLED <-> BROWSER-IE Microsoft Internet Explorer CSS .ipsum layout use-after-free attempt (browser-ie.rules)
 * 1:57481 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 1:57485 <-> DISABLED <-> BROWSER-IE Microsoft Internet Explorer CSS .ipsum layout use-after-free attempt (browser-ie.rules)
 * 1:57483 <-> DISABLED <-> SERVER-WEBAPP ManageEngine OpManager directory traversal attempt (server-webapp.rules)
 * 3:57489 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD WebVPN denial of service attempt (server-webapp.rules)
 * 3:57486 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD Web Service buffer overflow attempt (server-webapp.rules)
 * 3:57488 <-> ENABLED <-> SERVER-WEBAPP Cisco ASA and FTD WebVPN denial of service attempt (server-webapp.rules)

Modified Rules:


 * 1:16004 <-> DISABLED <-> FILE-OTHER Apple Mac OS X installer package filename format string vulnerability (file-other.rules)
 * 1:32753 <-> DISABLED <-> SERVER-WEBAPP FreePBX Framework Asterisk recording interface PHP unserialize code execution attempt (server-webapp.rules)
 * 1:43297 <-> DISABLED <-> SERVER-OTHER Cisco IOS HTTP percent sign denial of service attempt (server-other.rules)