Vulnerabilities
Misconfiguration
Runtime Security
Compliance
CVE Vulnerabilities

CVE-2008-5369

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

Published: Dec 08, 2008 | Modified: Dec 09, 2008
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
LOW
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2008-5369
CWEhttps://cwe.mitre.org/data/definitions/59.html

noip2 in noip2 2.1.7 allows local users to overwrite arbitrary files via a symlink attack on the /tmp/noip2 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
No-ip2 No-ip 2.1.7 (including) 2.1.7 (including)
No-ip Ubuntu dapper *
No-ip Ubuntu gutsy *
No-ip Ubuntu hardy *
No-ip Ubuntu intrepid *
No-ip 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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