IPS Signature Detail

Hi Cisco,
How we can see the detail of the Cisco IPS signature. If i want to see the the prriority(High/Medium/Low) of latest signature.
E.g if i upgrade my IPS sensor with Latest signature and i want to see what are the High or critical signature Cisco updated in
this signature then what is the process to check this or where?
Kind Regards,
Salman Ahmed

You can check the release notes/read me file on the version that you upgrade it to, and it will advise if there is any changes to the existing signature.

Similar Messages

How to upgrade IPS Signature

Can anyone help me with the steps of upgrading the IPS signature for the platform ASA SSM-20, IDS 4215, WV-SVC-IDSM-2 via IDM and IME. All the sensors are already upgraded with Engine E4 with signature S480.
Can I upgrade the signature directly from S480 to S507? Please let me know the file which I need to download. Is there any impact while updating the signture like reboot?

Hi Gangadaran,
We can apply the same package on all the mentioned platforms. It can be applied to all below platforms:
- IPS-42xx Cisco Intrusion Prevention System (IPS) sensors
- IDS-42xx Cisco Intrusion Detection System (IDS) sensors (except the IDS-4220, and IDS-4230)
- WS-SVC-IDSM2 series Intrusion Detection System Module (IDSM2)
- NM-CIDS IDS Network Module for Cisco 26xx, 3680, and 37xx Router Families.
- ASA-SSM-10 Cisco ASA Advanced Inspection and Prevention Security Services Module (Requires ASA)
- ASA-SSM-20 Cisco ASA Advanced Inspection and Prevention Security Services Module (Requires ASA)
- ASA-SSM-40 Cisco ASA Advanced Inspection and Prevention Security Services Module (Requires ASA)
- AIM-IPS Cisco Advanced Integration Module for ISR Routers
Refer the readme for all details:
http://www.cisco.com/web/software/282549755/37074/IPS-sig-S507.readme.txt
All the best!!
Thanks,
Prapanch

IPS Signature Update - CSM v3.3 SP1

Hi,
I am getting the following error message when deploying IPS signature updates to some of my sensors via the CSM deployment tool:
"Failed to generate edit config delta for host component. Detail: Error while processing the host component with DNS,access-list or http-proxy"
The signature update actually deploys, but I am wondering what is causing this message. I get this with some 4240, 4255 and IDSM-II blades, but not with others and I can't see any config variances.
Does anyone have any ideas what is causing this message? The access ACLs are the same for each sensor.
Many thanks

Hi Liam,
As you mentioned you are using a shared policy, and the access ACLs for all sensors are the same, I assume that you may be using an "Allowed Hosts" shared policy.
In that case, how did you create that policy ?
Did you create the policy from the policy view page, or did you right click on the "Allowed Hosts" setting of a device in device view and select "share policy" ?
If you did the first, you may be running into a known issue. You can read more about this on the bug toolkit:
http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCtg02063
This is the workaround that should work for you in case you are indeed running into this issue:
1. Rediscover or newly add any one IPS device running 7.x version
2. Create entries for "Allowed Hosts" according to requirements.
3. Right click on "Allowed Hosts", select "Share Policy..." and specify a name for shared policy.
4. Assign this "Allowed Hosts" shared policy to one or more devices.
5. Deployment should now be successful for "Allowed Hosts".

IPS signature forum

Does anyone use or know of a good forum, associated with Cisco or not, that is dedicated to discussing ips signatures? I am tasked with tuning fired signatures (IPS4260) and it would be nice to bounce specifics signature details off others experience. Thanks.

ahh...and how refreshing it is. lol

IPS Signature Knowledge

Hi Cisco,
How we can see the detail of the Cisco IPS signature. If i want to see the the prriority(High/Medium/Low) of latest signature.
E.g if i upgrade my IPS sensor with Latest signature and i want to see what are the High or critical signature Cisco updated in
this signature then what is the process to check this or where?
Kind Regards,
Salman Ahmed

You can check the release notes/read me file on the version that you upgrade it to, and it will advise if there is any changes to the existing signature.

Is it really possible to revert IPS signatures from CSM

Hi folks,
I've been trying to revert IPS signatures that I deployed through CSM Signature policies to the older release but it doesn't seem to be working. Contrary to it Cisco's CSM guide says:
If you later decide that you did not want to apply a signature update, you can revert to the
previous update level by selecting the Signatures policy on the device, clicking the View
Update Level button, and clicking Revert
I can't imagine it is possible as the signatures are normally compiled into xml files. How would the sensor do it ?
Eugene

During installation a copy of files that will be replaced or updated during the installation will be copied into a backup directory.
The CLI has a "downgrade" command that can uninstall the last update, and the backup copies will be used to replace the files being removed.
A few things to be aware of:
1) Old configuration will be copied back. So changes made since the update may be lost.
2) This works only for Engine Updates and Signature Updates. Major Updates, Minor Updates, and Service Packs replace the complete operating system so there is too much data to try and make backup copies for.
3) This works only for the last update installed. Once you've downgraded the latest one, you can't downgrade the previous one.
4) This can be done through CLI, and now also available in CSM.
Here are some things to check in your situation where it appears to not be working.
Login to the sensor and execute "show ver".
Does the history in the "show ver" output show a Signature Update package as the last update installed?
If not then either another downgrade was previously done, or a Major Update, Minor Update, or Service Pack was the last package installed and can't be downgraded.
If it can't be done through CSM you might try the CLI' "downgrade" command and see if it works through the CLI or if the CLI gives you an error and explanation.

Correct procedure to update IOS IPS signatures on 2911 router

What is the correct procedure to update the IOS IPS signatures on an 2911 router?
I know how to download the signatures file (eg. IOS-S556-CLI.pkg) but what is the correct way to install the update?
Thank you in advance!

The IPS signature package comes with a list of pre-enabled signatures, hence Cisco does not recommend enabling a lot more other signatures, especially not every single signature as documented.
The reason why is because the package might include retired/old signatures only for references, and not every single signature is required to protect your environment because you might not have the traffic for some signatures, you might not have some end hosts that are written with specific signatures, therefore, it becomes irrelevant if you enable it.
Typically here is how customer would enable/disable signatures:
- Use the default signature that is enabled by Cisco (the default should fit majority of the customers).
- Monitor it for a couple of months
- Disable those that you don't need, and enable others if you think you require it for specific.

How to convert Cisco IPS signatures to a MARS events - no keyword search

I am trying to run a scheduled report looking for the new Microsoft exploit under the IPS S411 release, SIGID 19339.0 and I am trying to form the query looking for the event this falls under without using a keyword search on the SIGID. Does anyone know how to correlate an IPS signature to a MARS event?
Thanks,
Mike

With the help of On-box local event correlation technology you can correlate. On-box local event correlation technology not only enables detection, but actually blocks multi-event attacks and malware in real time, complementing security incident management software such as the Cisco Security Monitoring, Analysis, and Reporting System (Cisco Security MARS) that correlate events across multiple devices.
Integrates with the Cisco Security Manager to correlate security events with the configured firewall rules and intrusion prevention system (IPS) signatures that can affect the security event

Where do IPS signature save at?

Hi
i successfully load the IOS IPS package into the router, verify via CLI and CCP the IPS signature did compile on the router. (advanced mode, around 588 signature is active)
but it went gone (happened twice), i just want to ensure few things
1. i did shut down my router, and migrate to production site, would it cause by the power off / on then IPS signature missing?
2. i did remove the "ip ips iosips in/out" command that previous apply at my interface, would this cause the IPS disable and gone?
just counldn't figure out why now my router only have 3 signature only..
thanks

1. Please use the doc below for reference on how to configure IOS-IPS on the router. I will try to answer your questions using this document.
http://tools.cisco.com/squish/9Be6a
2. You will see in step 2.1 we create directory on flash to store all the signature files and configurations.
e.g:
mkdir
router#mkdir ips
Create directory filename [ips]
Created dir flash:ips
3. In step 4.2 , we configure IPS signature storage location by referencing the directory we created above.
e.g:
ip ips config location flash:
router(config)#ip ips config location flash:ips
This is where the signature files will be stored.
4. In step 5.1 we copy the signature files to the router.
e.g:
router#copy ftp://cisco:[email protected]/IOS-S310-CLI.pkg idconf
Loading IOS-S310-CLI.pkg !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[OK - 7608873/4096 bytes]
The idconf command compiles the signature after the file is copied.
5. If all the above steps are done correctly, you should see the following files in flash:
router#dir ips
Directory of flash:/ips/
7 -rw- 203419 Feb 14 2008 16:45:24 -08:00 router-sigdef-default.xml <----Contains factory default signature definitions.
8 -rw- 271 Feb 14 2008 16:43:36 -08:00 router-sigdef-delta.xml
9 -rw- 6159 Feb 14 2008 16:44:24 -08:00 router-sigdef-typedef.xml
10 -rw- 22873 Feb 14 2008 16:44:26 -08:00 router-sigdef-category.xml
11 -rw- 257 Feb 14 2008 16:43:36 -08:00 router-seap-delta.xml
12 -rw- 491 Feb 14 2008 16:43:36 -08:00 router-seap-typedef.xml
64016384 bytes total (12693504 bytes free)
6. Make sure you do a 'Router#write memory' before you reload the router. This way the configuration done gets stored and is preserved after reboot.
Also make sure your configuration register on the router is correctly set to 0x2102.
Sid Chandrachud
TAC security solutions

IOS IPS Signature-File

Hi Guys,
We have recently purchased a Cisco ISR 2921, and on its docs it is writen that this product has a License for IOS IPS Signatrue File, but on the product Flash Memory there is no IOS IPS Sig-File.   and while i try to download the sig-file from Cisco, it fails.
Can any one tell me where is an alternate way to download the sig-file ?

900 active signatures is quite much for a system that has no dedicated IPS-ressources.
But you can controll which and how many signatures get enabled on your router:
In the following example I first disable all signatures and enable the ones for web-servers. So just decide which signatures you need. But don't forget to monitor your router-ressources.
gw#conf t
Enter configuration commands, one per line. End with CNTL/Z.
gw(config)#ip ips signature-category
gw(config-ips-category)#?
IPS signature category configuration commands:
category Category keyword
exit      Exit from Category Mode
no        Negate or set default values of a command
gw(config-ips-category)#category ?
adware/spyware                Adware/Spyware (more sub-categories)
all                           All Categories
attack                        Attack (more sub-categories)
configurations                Configurations (more sub-categories)
ddos                          DDoS (more sub-categories)
dos                           DoS (more sub-categories)
email                         Email (more sub-categories)
instant_messaging             Instant Messaging (more sub-categories)
ios_ips                       IOS IPS (more sub-categories)
l2/l3/l4_protocol             L2/L3/L4 Protocol (more sub-categories)
network_services              Network Services (more sub-categories)
os                            OS (more sub-categories)
other_services                Other Services (more sub-categories)
p2p                           P2P (more sub-categories)
reconnaissance                Reconnaissance (more sub-categories)
releases                      Releases (more sub-categories)
specially_licensed_signature Specially Licensed Signature (more sub-categories)
telepresence                  TelePresence (more sub-categories)
uc_protection                 UC Protection (more sub-categories)
viruses/worms/trojans         Viruses/Worms/Trojans (more sub-categories)
web_server                    Web Server (more sub-categories)
gw(config-ips-category)#category all
gw(config-ips-category-action)#retire true
gw(config-ips-category-action)#exit
gw(config-ips-category)#category web_server
gw(config-ips-category-action)#?
Category Options for configuration:
alert-severity   Alarm Severity Rating
enabled          Enable Category Signatures
event-action     Action
exit             Exit from Category Actions Mode
fidelity-rating Signature Fidelity Rating
no               Negate or set default values of a command
retired          Retire Category Signatures
gw(config-ips-category-action)#retired false
gw(config-ips-category-action)#exit
gw(config-ips-category)#exit
Do you want to accept these changes? [confirm]
gw(config)#
gw(config)#exit
gw#sh ip ips configuration | s IPS Signature Status
IPS Signature Status
    Total Active Signatures: 131
    Total Inactive Signatures: 4370
gw#
I didn't follow the thread and answered your first post to have less line-breaks in this post.

IOS IPS Signature Updates

Hi,
Is it possible to update signatures for IOS IPS or do we need to update the IOS to get more signatures?
Thanks and rgds
Rajesh

hi,
if you have cisco sdm, then it would be easy to update your IOS IPS signatures. You may need to upgrade IOS of the router only when the ips signature requires you to do it.

Tune IPS Signature

Hi,
I want to to tune IPS signature so that it can make exception of ip addresses.
the signature is 13004 (this is UDP scan signature) i have ciscoworks in my network which scan the network using UDP i dont want to disable the signature i just want to add the ip address of ciscoworks to safe list ( if it exists) i have configured the alert to be sent to my email and i got alot of those emails which says
high 13004-0 "AD - External UDP Scanner" x.y.z.w/src_port(*) 0.0.0.0/dest_port(*)
thanks

Alakabeer -
You want to configure an Event Action Rule for this signature with the IP address of your Ciscoworks host in the Event Action Variable:
http://www.cisco.com/en/US/docs/security/ips/7.0/configuration/guide/cli/cli_event_action_rules.html#wp1032319
- Bob

Filtering IPs on a IDS/IPS signature

Forgive me, I am pretty green when it comes to manipulting IDS/IPS signatures.
Is there a way to filter an IP or subnet from a IDS/IPS signature?
Senario:
We have 2 ASAs with IPS modules and 2 4260 IDS's, we use IPS Manager Express 6.1 to manage them. I keep getting a mail server that is triggering signature 5748-x because its sending a helo verb instead of a noop. This is fine for this paticular mail server. So i would like to remove its IP or filter its IP from the signature so when this happens the signature doesnt fire. However I dont want to disable the signature in case it happens somewhere else.
any help is greatly appreciated.
e-

It's not really too bad. I would encourage you to read still though;-)
Each signature can be configured with any number of actions. by default, a lot of them have the "product alert" action.
event action filters are basically a way to suppress all or some actions based on various criteria, like sigid and source (attacker) ip address. I've attached an example.

Anyone else notice IPS Signature 1548/0 firing frequently?

Hello.
We have seen IPS Signature 1548/0-"Microsoft Offic Picture Managed Memory Corruption" trigger frequently on image files downloaded from IP addresses associated with Microsoft, in the range of 207.46.0.0/16. This has happened for several different customers we manage and I'm wondering if anyone else has seen this new signature fire frequently.
It looks to me that this signature has not been tuned correctly by Cisco because in every case the "Source" IP in the alert was from Microsoft. Just wondering if anyone else has seen this too.
Jon.

The signature will be disabled and retired in an upcoming signature update. The new signature will have an updated benign triggers section to reflect that this sig may trigger on potentially benign traffic. In the meanwhile , please feel free to disable and retire this signature. Let me know if you have any additional questions.

Anyone else notice IPS Signature 1802/0 firing frequently?

We have seen IPS Signature 1802/0-"Ruby on Rails Remote Code Execution Vulnerability" trigger frequently on any webpage with XML with YAML content I'm wondering if anyone else has seen this new signature fire frequently.
It looks to me that this signature has not been tuned correctly by Cisco. We don't use Ruby on Rails anywhere in our environment, so we went ahead and disabled the signature, I'm just wondering if anyone else has seen this too.

Logged a TAC case and they are working on an update. You are correct this is a signature issue. No time table given. Since the new signature will replace the old one, they recomended we disable the current signature if the alerts were too much.

IPS Signature Detail

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