Security Event Management
Practically all of us are hooked up to the net. That causes significant
extra work because you need to log and monitor the security events
that are happening. You'd be surprised how much data that really is
and what may happen when you do not keep a very alert eye on it.
Managing security events has four phases:
- Collect
- Analyze
- Correlate
- Respond intelligently
Detecting threats in this jungle of data ain't easy. Yes, you can
script it, but many system admins are not really programmers, and
tools have sprung up to help out with this challenge. They are called
event log monitors, and when they are used for the security log
specifically they are also sometimes given the SEM moniker:
"Security Event Managers". These tools allow you to automate the
four phases you need to go through to keep your systems secure.
Events are dumped in the logs by the OS. Collection of all events
should always be done, and in many organizations they also need to
be archived for later security auditing purposes. You can apply
filters to the events, so that only the relevant ones are retained,
and then presented in high-level reports. It is extremely important
to have this automated, but also be able to go back to 6 months
earlier in case a security breach needs to be tracked back.
Analysis is the next phase. You can do this scheduled, which is what
most system admins do, but also in real-time for critical servers
so you can respond to threats immediately. A good example is a
series of failed login attempts that would prompt you to immediately
investigate what the problem is.
You have to have the ability to analyze logs over longer time intervals
so that you can look at weaknesses in your security posture. Some hacker
behavior is only recognizable over several weeks or months of log
analysis as they are sneaky and smart using low-impact and distributed
techniques. You need to be able to do both real time and scheduled
analysis.
Now that you a) have your events and b) analyzed them, you need to c) correlate these data points to see if there are any patterns. If there are, you need to determine if these patterns are threats and if so, what severity level they are. By investigating the data, you can quickly see if a certain kind of behavior comes from the same IP address for example.
When you have identified a valid threat, there is a response required. You will definitely need to know your domains, and have knowledge of software forensics to not destroy evidence. Enough books exist about this kind of careful approach to find and catch the bad guys. You could script automated responses but you need to be cautious with these as it is hard to program in real intelligence.
Security Event Management, when done well, is a crucial foundation of
your organization's security posture. The combination of low-cost
off-the-shelf tools and admin expertise is killer combo to keep your
domains free from intruders. ServerVision is just the tool to do this,
and at the insanely low price of just $50 per server you can afford
to replace any other event monitor you have currently lying around.
http://www.w2knews.com/rd/rd.cfm?id=041025TP-ServerVision
Linux and Solaris Patch Management
Patch management is an issue that goes beyond the realm of Windows
operating systems, even though Microsoft issues security and other
vulnerability patches almost weekly. Recently, universities,
research institutions and high performance computing centers have
become the targets for some sophisticated Linux and Solaris attacks.
These unknown attackers were able to compromise computers using
a variety of techniques, ultimately escalating to root privileges
and triggering a number of local exploits. Like Microsoft, Linux
and Solaris may issue patches that fix these security holes;
however, successfully deploying them while maintaining the integrity
of your Windows networks puts more stress on already overburdened
system admins. This could be a significant problem considering
how many organizations are employing mixed platforms that include
MS, Red Hat Linux and Solaris operating systems. UpdateEXPERT gets
you the tool you need to successfully address patching on a variety
of operating systems including Windows, Red Hat Linux, Solaris and
Novell. In addition, its newest version includes important new
features such as Patch Rollback Support, Scan and Manage by IP
Address and Scheduled Installs that make the deployment of patches
easy and reliable no matter what operating systems you might be
using. 30-day evals here:
http://www.w2knews.com/rd/rd.cfm?id=041025TP-UpdateEXPERT
Don't Get Hacked Like UC Berkeley!
A computer hacker accessed names and Social Security numbers of
about 1.4 million Californians after breaking into a University
of California, Berkeley, computer system in possibly the worst
attack of its kind ever suffered by the school. You need to scan
for vulnerabilities the moment they come out, and patch 'em like
greased lightning.
SNSI has just been updated with the enormous slew of MS holes,
but there are also new vulnerabilities in other platforms.
New vulnerability updates for this release include:
29 new Windows checks, bringing the total Windows checks to 2287.
10 new Linux checks, bringing the total to 611, and 4 new Solaris
checks, bringing the total to 246:
ID - Name
L602 - Squid - NTLM authentication helper - RH
L603 - Spamassassin - Improper email handling - RH
L604 - Ruby - insecure file permissions - RH
L605 - Heimdal - race condition in tnftpd - Suse
L606 - Samba - Arbitrary file access - RH, Suse
L607 - XFree86 - Xpm image decoding - RH, Suse
L608 - Openmotif - Xpm image decoding - Suse
L609 - Squid - clientAbortBody() Vulnerability - FC2
L610 - Cyrus-SASL Buffer overflow and SASL_PATH vulnerabilities: FC; MDK;
L611 - Xine-lib multiple string & heap vulnerabilities- MDK
S243 - TCP Loopback Connection System Hang - Solaris 7 - 9
S244 - Gzip -f File Permissions - Solaris 8
S245 - Cluster RPC Request Timeout - Solaris 8 - 9
S246 - Who Incorrect Hostname/IP- Solaris 9
W2259 - JPEG Processing (GDI+) Vulnerability - Visio 2002
W2260 - JPEG Processing (GDI+) Vulnerability - Visio 2003
W2261 - JPEG Processing (GDI+)Vulnerability - Visual Studio 2003
W2262 - JPEG Processing (GDI+) Vulnerability - Visual Studio 2002
W2263 - JPEG Processing (GDI+) Vulnerability - Miscellaneous
W2264 - RealPlayer .RM File Vulnerability
W2265 - Apache Satisfy Directive Vulnerability W2266 O Trojan Horse Detected
W2267 - JPEG Processing (GDI+) Vulnerability - Discreet 3ds max
W2268 - JPEG Processing (GDI+) Vulnerability - Project 2002
W2269 - Project 2002 Service Pack Not Installed
W2270 - JPEG Processing (GDI+) Vulnerability - Project 2003
W2271 - RPC Runtime Library Buffer Vulnerability - NT 4.0 - MS04-029
W2272 - WebDAV XML Message Handler Vulnerability - W2K - MS04-030
W2273 - WebDAV XML Message Handler Vulnerability - XP - MS04-030
W2274 - WebDAV XML Message Handler Vulnerability - W2K3 - MS04-030
W2275 - NetDDE Vulnerability - MS04-031
W2276 - Window Management Vulnerability - MS04-032
W2277 - Virtual DOS Machine Vulnerability - MS04-032
W2278 - Graphics Rendering Engine Vulnerability - MS04-032
W2279 - Windows Kernel Vulnerability - W2K3 - MS04-032
W2280 - Excel 2000 Parameter Vulnerability - MS04-033
W2281 - Excel 2002 Parameter Vulnerability - MS04-033
W2282 - Compressed Folder Vulnerability - MS04-034
W2283 - Exchange Server 2003 SMTP Vulnerability - MS04-035
W2284 - NNTP Component Vulnerability - MS04-036
W2285 - Windows Shell Function Vulnerability - MS04-037
W2286 - Program Group Vulnerability - MS04-037
W2287 - Internet Explorer Not Updated- MS04-038
In addition, there were improvements in the following vulnerability
checks:
H4,H13,H17,H19,H23,H30,H31,H37,H40,H41,H43,H45,H51,H52,H56,H58,
H60,H64,H65,H68,H74,H75,H78,H91
L348,L482,L521,L570,L593,L599, L578, L562, L590,L587, L595
W1142,W1986,W1999,W2067 - Anti-virus
W2051,W2063,W2037,W2216
SNSI uses the latest Mitre Common Vulnerabilities and Exposures
(CVE) list of computer incidents. It also contains the latest
SANS/FBI top 20 vulnerability list. SNSI also uses the latest
CERT, CIAC Microsoft and FedCIRC (Department of Homeland Security)
advisories. To get the latest SNSI version, visit:
http://www.w2knews.com/rd/rd.cfm?id=041025TP-SNSI