Vulnerabilities
Misconfiguration
Runtime Security
Compliance
CVE Vulnerabilities

CVE-2014-3537

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

Published: Jul 23, 2014 | Modified: Feb 13, 2023
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
1.2 LOW
AV:L/AC:H/Au:N/C:P/I:N/A:N
RedHat/V2
5 MODERATE
AV:L/AC:M/Au:S/C:C/I:P/A:N
RedHat/V3
Ubuntu
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2014-3537
CWEhttps://cwe.mitre.org/data/definitions/59.html

The web interface in CUPS before 1.7.4 allows local users in the lp group to read arbitrary files via a symlink attack on a file in /var/cache/cups/rss/.

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
Cups Apple 1.7.0 1.7.0
Cups Apple 1.7.1 1.7.1
Cups Apple 1.7 1.7
Cups Apple 1.7.2 1.7.2
Cups Apple 1.7.1 1.7.1
Cups Apple * 1.7.3
Red Hat Enterprise Linux 6 RedHat cups-1:1.4.2-67.el6 *
Red Hat Enterprise Linux 7 RedHat cups-1:1.6.3-17.el7 *
Cups Ubuntu lucid *
Cups Ubuntu precise *
Cups Ubuntu trusty *
Cups 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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