CVE Vulnerabilities

CVE-2008-5256

Improper Link Resolution Before File Access ('Link Following')

Published: Nov 27, 2008 | Modified: Aug 08, 2017
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
4.4 MEDIUM
AV:L/AC:M/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu
LOW

The AcquireDaemonLock function in ipcdUnix.cpp in Sun Innotek VirtualBox before 2.0.6 allows local users to overwrite arbitrary files via a symlink attack on a /tmp/.vbox-$USER-ipc/lock temporary file.

Weakness

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Affected Software

Name Vendor Start Version End Version
Virtualox Virtualox * 2.0.4 (including)
Virtualox Virtualox 1.3.2 (including) 1.3.2 (including)
Virtualox Virtualox 1.3.4 (including) 1.3.4 (including)
Virtualox Virtualox 1.3.6 (including) 1.3.6 (including)
Virtualox Virtualox 1.3.8 (including) 1.3.8 (including)
Virtualox Virtualox 1.4.0 (including) 1.4.0 (including)
Virtualox Virtualox 1.5.0 (including) 1.5.0 (including)
Virtualox Virtualox 1.5.2 (including) 1.5.2 (including)
Virtualox Virtualox 1.5.4 (including) 1.5.4 (including)
Virtualox Virtualox 1.5.6 (including) 1.5.6 (including)
Virtualox Virtualox 1.6.0 (including) 1.6.0 (including)
Virtualox Virtualox 1.6.2 (including) 1.6.2 (including)
Virtualox Virtualox 1.6.4 (including) 1.6.4 (including)
Virtualox Virtualox 1.6.6 (including) 1.6.6 (including)
Virtualox Virtualox 2.0.0 (including) 2.0.0 (including)
Virtualox Virtualox 2.0.2 (including) 2.0.2 (including)
Virtualbox-ose Ubuntu gutsy *
Virtualbox-ose Ubuntu hardy *
Virtualbox-ose Ubuntu intrepid *
Virtualbox-ose Ubuntu upstream *

Potential Mitigations

  • Follow the principle of least privilege when assigning access rights to entities in a software system.
  • Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

References