Messages in this thread | | | Date | Mon, 2 Jul 2001 21:51:44 +0200 (CEST) | From | <> | Subject | Re: Strange errors in /var/log/messages |
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On Mon, 2 Jul 2001, Guest section DW wrote:
> On Mon, Jul 02, 2001 at 05:16:23PM +0100, Alan Cox wrote: > > > > I'm running RedHat 7.0 with all official RH patches applied. The kernel I > > > currently run fow a few days is 2.2.19-7.0.8 > > > I run the pre-compiled kernel of RH. Suddenly I the following messages: > > > > > > Jul 2 15:12:16 gateway SERVER[1240]: Dispatch_input: bad request line > > > 'BBXXXXXXXXXXXXXXXXXX%.176u%3 > > > 00$nsecurity.%301$n%302$n%.192u%303$n\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\220\22 > > > These are for an application. Not sure which or why > > See CERT Advisory CA-2000-22 > http://www.infowar.com/iwftp/cert/advisories/CA-2000-22.html > > "A popular replacement software package to the BSD lpd printing service > called LPRng contains at least one software defect, known as a "format string > vulnerability," which may allow remote users to execute arbitrary code on > vulnerable systems."
I just read the article. It seems somebody tried to exploid a bug in LPRng. Unfortunately I didn't check the TCP/IP connections at the time of attack (with netstat), so I couldn't tell who was connected to port 515. The article suggest upgrading to 3.6.25. I'm currenlty running 3.7.4-23. I assume I'm not vulnerable, but those 'errors' in the logfile really scared the heck out of me! :) To be certain, I just blocked poort 515 for outbound connections. :)
Bye the way, sorry this message was off-topic, but I didn't know it was a LPRng issue, not a kernel issue.
Thanks!
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