Vulnerabilities
Misconfiguration
Runtime Security
Compliance
CVE Vulnerabilities

CVE-2011-0702

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

Published: Feb 14, 2011 | Modified: Feb 27, 2020
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
MEDIUM
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2011-0702
CWEhttps://cwe.mitre.org/data/definitions/59.html

The feh_unique_filename function in utils.c in feh before 1.11.2 might allow local users to overwrite arbitrary files via a symlink attack on a /tmp/feh_ 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
Feh Feh_project * 1.11.1 (including)
Feh Feh_project 1.3.5 (including) 1.3.5 (including)
Feh Feh_project 1.4 (including) 1.4 (including)
Feh Feh_project 1.4.1 (including) 1.4.1 (including)
Feh Feh_project 1.4.2 (including) 1.4.2 (including)
Feh Feh_project 1.4.3 (including) 1.4.3 (including)
Feh Feh_project 1.5 (including) 1.5 (including)
Feh Feh_project 1.6 (including) 1.6 (including)
Feh Feh_project 1.6.1 (including) 1.6.1 (including)
Feh Feh_project 1.7 (including) 1.7 (including)
Feh Feh_project 1.8 (including) 1.8 (including)
Feh Feh_project 1.9 (including) 1.9 (including)
Feh Feh_project 1.10 (including) 1.10 (including)
Feh Feh_project 1.10.1 (including) 1.10.1 (including)
Feh Feh_project 1.11 (including) 1.11 (including)
Feh Ubuntu dapper *
Feh Ubuntu hardy *
Feh Ubuntu karmic *
Feh Ubuntu lucid *
Feh Ubuntu maverick *
Feh Ubuntu natty *
Feh 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

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