GLSA 200703-09: Smb4K: Multiple vulnerabilities

http://security.gentoo.org/

Severity:	high
Title:	Smb4K: Multiple vulnerabilities
Date:	03/09/2007
Bugs:	#156152
ID:	200703-09

Synopsis

Multiple vulnerabilities have been identified in Smb4K.

Background

Smb4K is a SMB/CIFS (Windows) share browser for KDE.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-misc/smb4k	< 0.6.10a	>= 0.6.10a	All supported architectures

Description

Kees Cook of the Ubuntu Security Team has identified multiple vulnerabilities in Smb4K.

The writeFile() function of smb4k/core/smb4kfileio.cpp makes insecure usage of temporary files.
The writeFile() function also stores the contents of the sudoers file with incorrect permissions, allowing for the file's contents to be world-readable.
The createLockFile() and removeLockFile() functions improperly handle lock files, possibly allowing for a race condition in file handling.
The smb4k_kill utility distributed with Smb4K allows any user in the sudoers group to kill any process on the system.
Lastly, there is the potential for multiple stack overflows when any Smb4K utility is used with the sudo command.

Impact

A local attacker could gain unauthorized access to arbitrary files via numerous attack vectors. In some cases to obtain this unauthorized access, an attacker would have to be a member of the sudoers list.

Workaround

There is no known workaround at this time.

Resolution

All Smb4K users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-misc/smb4k-0.6.10a"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200703-09.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.