CVE Vulnerabilities

CVE-2008-5299

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

Published: Dec 01, 2008 | Modified: Apr 09, 2025
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
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chm2pdf 0.9 allows user-assisted local users to delete arbitrary files via a symlink attack on .chm files in the (1) /tmp/chm2pdf/work or (2) /tmp/chm2pdf/orig temporary directories.

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
Chm2pdfKarakas-online0.9 (including)0.9 (including)
Chm2pdfUbuntuhardy*
Chm2pdfUbuntuintrepid*
Chm2pdfUbuntuupstream*

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