Threat Level: green Handler on Duty: Didier Stevens

SANS ISC: When is a 0day not a 0day? Samba symlink bad default config - Internet Security | DShield SANS ISC InfoSec Forums


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When is a 0day not a 0day? Samba symlink bad default config

When is a 0day not a 0day? When the exploit ends up being just a poor default configuration issue. It can lead to files being read, that the user has permission to read. Like /etc/passwd for example. The solution? Set "wide links = no" in the [global] section of your smb.conf and restart smbd to eliminate this problem, from the Samba Symlink Attack posting here. Thanks Elazar!

Cheers,
Adrien de Beaupré
Intru-shun.ca Inc.

Adrien de Beaupre

353 Posts
ISC Handler

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