CVE Vulnerabilities

CVE-2008-4477

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

Published: Oct 08, 2008 | Modified: Aug 08, 2017
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
7.2 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu
LOW

alert.d/test.alert in mon 0.99.2 allows local users to overwrite arbitrary files via a symlink attack on the test.alert.log 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
Mon Jim_trocki 0.99.2 (including) 0.99.2 (including)
Mon Ubuntu dapper *
Mon Ubuntu feisty *
Mon Ubuntu gutsy *
Mon Ubuntu hardy *
Mon 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