Out of all those Red Hat Enterprise Linux vulnerablities, only 2 were critical based on the Microsoft severity scale. That means only 2 vulnerabilities could have potentially allowed a worm to spread without interaction. Out of the Microsoft vulnerabilities there are 8 critical.
So whilst it might be harder to hold 200 sweets in your hand without dropping a few, I'd rather be holding 200 sweets and 2 ticking timebombs than 30 sweets and 8 ticking timebombs.
In theory you should be able to program an EPROM or EEPROM, and just pop it into any old network card you have laying around that has a boot PROM socket. There is even a utility for the 3c905b/c that lets you program a EEPROM from Linux, and you can pick up a 3c905b card on ebay for under $5 including postage, so cheaper than a dedicated programmer. However the 3c905b isn't a great card to try to use the EEPROM in after it's programmed: a flaw in that card stops all the ROM contents being mapped properly.
Armed with a 3c905b for programming, an Atmel AT29C010A from Farnell Electronics, and a old 3c900 I'm glad I didn't throw away for the destination, a spare Windows PC, a couple of spare hours got it all working. Here are the final steps to make it all work for me:
The perl script used to analyse the raw stats has also had some updates and no longer needs to be edited to filter the vulnerabilities you are interested in. Run "perl daysofrisk.pl --help" for details.
For Red Hat Enterprise Linux 3 across all dates (20 months) we've had 13 critical vulnerabilities; of which 84% had updates available via Red Hat Network within a day of the vulnerability being public.
Despite the report's claim to incorporate a qualitative assessment of vendor reactions to serious vulnerabilities, the headline metrics treats all vulnerabilities as equal, regardless of their risk to users.
Their headline figure is 61 days of risk for a Red Hat Enterprise Linux 3 minimal installation with the addition of MySQL server from Red Hat Enterprise Linux Extras.
That sounds like a lot of days of risk - but if you filter their dataset by severity, using the Microsoft scale for determining the severity of each issue you find the following:
** Critical issues: 3 total issues. All fixed on the same day as first public disclosure, therefore having 0 days average risk.
** Critical plus Important: 49 total, with 34 average days of risk
Red Hat prioritise all vulnerabilities and fix first those that matter the most. We publish our raw data and metrics at http://people.redhat.com/mjc/
Days of risk statistics only tell a small part of the story: studies show consumers take some time to apply patches even after a vendor has produced a security update. At Red Hat we continue to work on ways to help people keep their machines up to date. Last year we added Exec-Shield to Red Hat Enterprise Linux 3 which included support for processor EDB (execute disable bit) and NX (no execute) technology. Earlier this year Red Hat Enterprise Linux 4 shipped with Security Enhanced Linux turned on by default. These technology innovations are designed to reduce the risk of security issues.
Just finished the security audit for FC4 candidate - For 20030101-20050605 there are a potential 861 CVE named vulnerabilities that could have affected FC4 packages. 759 (88%) of those are fixed because FC4 includes an upstream version that includes a fix, 8 (1%) are still outstanding, and 94 (11%) are fixed with a backported patch. I'll post all the details to fedora-devel-list later in the week. I'm also giving a keynote about Fedora and security response at FudCon later this month.
A CSO remarked to me a couple of weeks ago that their perception was that OpenSSL had a lot of serious security issues over the years. In fact it's really only had a couple of serious issues, and in total only 15 issues in the last 4 years. So in the style of the Apache vulnerability database I did one for OpenSSL. This is now publically available and we'll keep it up to date. The page is built from a XML database of the issues.
Anyway, the most useful thing that I've kept up to date in Apache Week is the database of vulnerabilities that affects the Apache Web server v1.3 and v2.0. This list was even being linked to directly by httpd.apache.org so I made good on a promise I made a year ago and moved the database to the official site. Apache Week uses xslt for transforming the database, but the Apache site used velocity for page markup, but no one seemed to mind me adding ant-trax.jar to the site so the database gets converted from xslt to the page format that gets marked up by velocity. The end result is a couple of nice HTML pages on the official Apache site that list all the vulnerabilities that is easy for us to keep up to date.
Red Hat was not given an opportunity to examine the "Role Comparison Report" or it's data in advance of publication and we believe there to be inaccuracies in the published "days of risk" metrics. These metrics are significantly different from our own findings based on data sets made publically available by our Security Response Team.
Despite the report's claim to incorporate a qualitative assessment of vendor reactions to serious vulnerabilities, the headline metrics treats all vulnerabilities as equal, regardless of their risk to users. The Red Hat Security Response Team publish complete data sets allowing calculations to be made taking into account the severity of each flaw. Red Hat prioritise all vulnerabilities and fix first those that matter the most.
For example out of the dataset examined by the report there were only 8 flaws in Red Hat Enterprise Linux 3 that would be classed as "critical" by either the Microsoft or Red Hat severity scales. Of those, three quarters were fixed within a day, and the average was 8 days. A critical vulnerability is one that could be exploited to allow remote compromise of a machine without interaction, for example by a worm.
With the current threat landscape it is no longer sufficient for operating system vendors to just respond to security issues. As part of our overall security strategy Red Hat is continually innovating to create new technologies that proactively help reduce the risk of unpatched or as yet undiscovered vulnerabilities.
In January 1995 I found a security flaw affecting the NCSA web server and I'd forwarded my patch on to Brian Behlendorf. The flaw affected the Wired.com site he was the administrator of. He told me about the Apache project and and I was invited to join the group and share the numerous patches I'd made to NCSA httpd, so my first post was back in April 1995. I can't believe that was ten years ago!
Anyway in my official Red Hat blog I've been posting stuff about the recent comparisons of security issues in Microsoft and Red Hat, and we've published a ton of useful data. See Counting Teapots and Real Data.
The first is a mapping of severity for every security advisory for Red Hat Enterprise Linux and Stronghold from release date through to Feb 15th 2005 (after Feb 15th 2005 this information is included on advisories as published).
These severities assigned to each RHSA are based on a unique assement of how each individual flaw affects the particular distribution, then rolling up the severities and picking the worst to give the overall severity rating. A second mapping therefore gives the severity rating we assigned to each individual vulnerability, by CVE name. Included in this mapping is also the date that each issue was first known publically.
The final mapping is RHSA to release date. In the majority of cases the "Issue Date" displayed on the advisory or by Red Hat Network is correct, however this file also contains fixes where the issue date was published incorrectly, was missing, or delayed. This file contains every RHSA from 2000 to date, and will get get updated from time to time.
We'll update the mappings from time to time (we keep up to date copies internally, so if you have specific questions or we've forgotten to update them in a while just drop firstname.lastname@example.org an email). We also have other mappings which are automatically generated from our errata system which we'll publish soon.