Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2008-0806

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

Published: Feb 19, 2008 | Modified: Apr 09, 2025
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
3.6 LOW
AV:L/AC:L/Au:N/C:P/I:P/A:N
RedHat/V2
RedHat/V3
Ubuntu
LOW
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2008-0806
CWEhttps://cwe.mitre.org/data/definitions/59.html

wyrd 1.4.3b allows local users to overwrite arbitrary files via a symlink attack on the wyrd-tmp.[USERID] 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

NameVendorStart VersionEnd Version
WyrdPaul_pelzl1.4.3b_3 (including)1.4.3b_3 (including)
WyrdUbuntudapper*
WyrdUbuntudevel*
WyrdUbuntuedgy*
WyrdUbuntufeisty*
WyrdUbuntugutsy*
WyrdUbuntuhardy*
WyrdUbuntuintrepid*
WyrdUbuntujaunty*
WyrdUbuntukarmic*

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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