CVE Vulnerabilities

CVE-2014-3977

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

Published: Jun 08, 2014 | Modified: Aug 31, 2021
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
6.9 MEDIUM
AV:L/AC:M/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu

libodm.a in IBM AIX 6.1 and 7.1, and VIOS 2.2.x, allows local users to overwrite arbitrary files via a symlink attack on a temporary file. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-2179.

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
Vios Ibm 2.2.0.10 (including) 2.2.0.10 (including)
Vios Ibm 2.2.0.11 (including) 2.2.0.11 (including)
Vios Ibm 2.2.0.12 (including) 2.2.0.12 (including)
Vios Ibm 2.2.0.13 (including) 2.2.0.13 (including)
Vios Ibm 2.2.1.0 (including) 2.2.1.0 (including)
Vios Ibm 2.2.1.1 (including) 2.2.1.1 (including)
Vios Ibm 2.2.1.3 (including) 2.2.1.3 (including)
Vios Ibm 2.2.1.4 (including) 2.2.1.4 (including)
Vios Ibm 2.2.1.4-fp-25_sp-02 (including) 2.2.1.4-fp-25_sp-02 (including)
Vios Ibm 2.2.1.8 (including) 2.2.1.8 (including)
Vios Ibm 2.2.1.9 (including) 2.2.1.9 (including)
Vios Ibm 2.2.2.0 (including) 2.2.2.0 (including)
Vios Ibm 2.2.2.4 (including) 2.2.2.4 (including)
Vios Ibm 2.2.2.5 (including) 2.2.2.5 (including)
Vios Ibm 2.2.3.0 (including) 2.2.3.0 (including)
Vios Ibm 2.2.3.2 (including) 2.2.3.2 (including)
Vios Ibm 2.2.3.3 (including) 2.2.3.3 (including)
Aix Ibm 6.1 (including) 6.1 (including)
Aix Ibm 7.1 (including) 7.1 (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