CVE Vulnerabilities

CVE-2009-3304

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

Published: Dec 04, 2009 | Modified: Dec 07, 2009
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

GForge 4.5.14, 4.7 rc2, and 4.8.2 allows local users to overwrite arbitrary files via a symlink attack on authorized_keys files in users home directories, related to deb-specific/ssh_dump_update.pl and cronjobs/cvs-cron/ssh_create.php.

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 4.5.14 (including) 4.5.14 (including)
Gforge Gforge 4.7-rc2 (including) 4.7-rc2 (including)
Gforge Gforge 4.8.2 (including) 4.8.2 (including)

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