Ethical Hacking

Learn to find vulnerabilities before the bad guys do! Gain real world hands on hacking experience in our state of the art hacking lab. Course designed and taught by expert instructors with years of penetration testing experience. 12 student maximum in every class. Certification attempt included in every package.
Computer Forensics Training at InfoSec Institute

Gain the in-demand skills of a certified computer examiner, learn to recover trace data left behind by fraud, theft, and cybercrime perpetrators. Discover the source of computer crime and abuse at your organization so that it never happens again. All of our class sizes are guaranteed to be 12 students or less to facilitate one-on-one interaction with one of our expert instructors.




Network Security Secure-Shell
[Top] [All Lists]

OpenSSH + GeodeLX + Linux + Cryptodev = Corrupted MAC on input.

Subject: OpenSSH + GeodeLX + Linux + Cryptodev = Corrupted MAC on input.
Date: Sat, 19 Jan 2008 14:57:04 +0100
Hello,

I just set up Debian Lenny on a PCEngines ALIX. This board have a GeodeLX processor with hardware crypto accelerator, so I patched my kernel to get cryptodev support.
Everything is fine when playin with openssl, but openssh just crash when a large amount of data is transfered.


A small example:
alix:~# scp 100meg.test localhost:/dev/null
root@localhost's password:
100meg.test 0% 0 0.0KB/s --:-- ETAReceived disconnect from 127.0.0.1: 2: Corrupted MAC on input.
lost connection
alix:~#


If I unload cryptodev kernel modules, averything works fine again.

I found this guy which reported to have the same issue:
http://www.docunext.com/wiki/My_Notes_on_Patching_2.6.22_with_OCF#The_Results

Tested with OpenSSH 4.6p1 and 4.7p1.

Any help would be appreciated.

Best regards, Adam.

PS: If you don't know at all what's wrong, could you please tell me how to disable cryptodev in sshd (without rebuilding the package wihout --with-ssl-engine) ?

<Prev in Thread] Current Thread [Next in Thread>
  • OpenSSH + GeodeLX + Linux + Cryptodev = Corrupted MAC on input., "Adam Cécile (Le_Vert)" <=