Re: Netscape 2.01 fixes server vulnerabilities by breaking the client...
(This was previously posted to cypherpunks list, I have expanded the distribution to the firewalls list due to the content.) In Article: <315C8FCB.2781@netscape.com>, Tom Weinstein <tomw@netscape.com> wrote: # Rich Graves wrote: # > # > Now I suppose they'll want me to fix all the pages where I do a finger # > with a gopher://host:79/0user Any chance this nonfix can be unfixed? # > # > This nonfix was applied to the UNIX and Win32 versions; I haven't # > checked the other platforms. # It may be unpleasant, but it's a fact that there was a real security # hole here. There is a well known buffer overrun bug in finger that a # lot of people inside firewalls haven't fixed. Using gopher: URLs # in IMG tags it was possible to do nasty things. We tried to err on # the side of permissivity, but finger was one port we just couldn't # allow. Yes, it sucks. So does someone reaching through your firewall # and running commands as root. Let's look at this from the perspective of a company with a firewall: Q: Do I want my users dictating what's allowed? A: Probably not. Q: Do I want my software vendors dictating what's allowed? A: Maybe not. Real Q1: When are sun/netscape/browser-vendor-x going to provide standardized, secure, multi-teired configuration options? Real Q2: It seams to me that most of the standard TCP protocols that a gopher client can talk to should have similarly standard protocol-specifiers for the URL. Browser vendors are in a perfect position to say "this lack of synchronization is a real problem" and "It's bitten us already" and to take care of the problem by proposing RFCs. Real Q3: (Somewhat off-topic) when are signed applets going to appear? comprehensive standards coupled with multi-teired configuration options would allow real-world customers and their net-neighbors to sleep a little better at night. -- Steve@AZTech.Net
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Steve Gibbons