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Nessus: "adduser" race condition vulnerability


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200408-11 / Nessus
Release Date August 12, 2004
Latest Revision May 22, 2006: 02
Impact normal
Exploitable local
Package Vulnerable versions Unaffected versions Architecture(s)
net-analyzer/nessus <= 2.0.11 >= 2.0.12 All supported architectures

Related bugreports: #58014


Nessus contains a vulnerability allowing a user to perform a privilege escalation attack.

2.  Impact Information


Nessus is a free and powerful network security scanner.


A race condition can occur in "nessus-adduser" if the user has not configured their TMPDIR variable.


A malicious user could exploit this bug to escalate privileges to the rights of the user running "nessus-adduser".

3.  Resolution Information


There is no known workaround at this time. All users are encouraged to upgrade to the latest available version of Nessus.


All Nessus users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge sync

# emerge -pv ">=net-analyzer/nessus-2.0.12"
# emerge ">=net-analyzer/nessus-2.0.12"

4.  References


Page updated August 12, 2004

Summary: This is a Gentoo Linux Security Advisory

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