Nessus 2.0.6 has been released. It fixes a potential security vulnerability in libnasl as well as some other buglets. There are some flaws in libnasl which might let a script break out of its sandboxed environment and execute arbitrary commands on the nessusd host. To exploit these flaws, an attacker would need to have a valid Nessus account as well as the ability to upload arbitrary Nessus plugins in the Nessus server (this option is disabled by default). Not that these issues can NOT be exploited by a tested host to crash nessusd remotely. . Solution Upgrade to Nessus 2.0.6 available at : http://ftp.nessus.org/nessus/nessus-2.0.6/ ftp://ftp.nessus.org/pub/nessus/nessus-2.0.6/ . Workaround Make sure the option 'plugins_upload' is set to 'no' in nessusd.conf . Thanks "Sir Mordred" <mordred@s-mail.com> discovered some ways to crash NASL scripts by sending bad parameters to insstr(), ftp_log_in(), and other functions. Upon investigation, we fixed similar issues in other nasl functions as well as in libnessus.
Little correction: It's 2.0.6a - just compiling it to see if copying the ebuilds is good enough.
Compiled fine, survived one test run. Committing as ~arch.
glsa sent
