CVE Vulnerabilities

CVE-2007-3921

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

Published: Nov 08, 2007 | Modified: Jul 29, 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
UNTRIAGED

gforge 3.1 and 4.5.14 allows local users to truncate arbitrary files via a symlink attack on temporary files.

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
Gforge Gforge 3.1 (including) 3.1 (including)
Gforge Gforge 4.5.14 (including) 4.5.14 (including)
Gforge Ubuntu dapper *
Gforge Ubuntu edgy *
Gforge Ubuntu feisty *
Gforge Ubuntu gutsy *

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