CVE Vulnerabilities

CVE-2011-2185

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

Published: Jul 27, 2011 | Modified: Aug 02, 2011
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

Fabric before 1.1.0 allows local users to overwrite arbitrary files via a symlink attack on (1) a /tmp/fab.*.tar file or (2) certain other files in the top level of /tmp/.

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
Fabric Fabfile 0.9.2 0.9.2
Fabric Fabfile 0.9 0.9
Fabric Fabfile * 1.0.2
Fabric Fabfile 0.9.4 0.9.4
Fabric Fabfile 0.9.7 0.9.7
Fabric Fabfile 0.9.6 0.9.6
Fabric Fabfile 0.9.3 0.9.3
Fabric Fabfile 0.9.1 0.9.1
Fabric Fabfile 1.0.0 1.0.0
Fabric Fabfile 0.9.5 0.9.5
Fabric Fabfile 1.0.1 1.0.1

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