Vulnerabilities
Misconfiguration
Runtime Security
Compliance
CVE Vulnerabilities

CVE-2007-5495

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

Published: May 23, 2008 | Modified: Sep 29, 2017
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
4.4 MEDIUM
AV:L/AC:M/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2007-5495
CWEhttps://cwe.mitre.org/data/definitions/59.html

sealert in setroubleshoot 2.0.5 allows local users to overwrite arbitrary files via a symlink attack on the sealert.log 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
Enterprise_linux Redhat 5.0 (including) 5.0 (including)
Enterprise_linux_desktop Redhat 5 (including) 5 (including)
Red Hat Enterprise Linux 5 RedHat setroubleshoot-0:2.0.5-3.el5 *
Red Hat Enterprise Linux 5 RedHat setroubleshoot-plugins-0:2.0.4-2.el5 *

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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