CVE Vulnerabilities

CVE-2008-1569

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

Published: Mar 31, 2008 | Modified: Aug 08, 2017
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
3.3 LOW
AV:L/AC:M/Au:N/C:N/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu
LOW

policyd-weight 0.1.14 beta-16 and earlier allows local users to modify or delete arbitrary files via a symlink attack on temporary files that are used when creating a socket.

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
Debian_linux Debian 4.0 (including) 4.0 (including)
Policyd-weight Ubuntu devel *
Policyd-weight Ubuntu feisty *
Policyd-weight Ubuntu gutsy *
Policyd-weight Ubuntu hardy *
Policyd-weight Ubuntu intrepid *

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