CVE Vulnerabilities

CVE-1999-0794

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

Published: Oct 01, 1999 | Modified: Oct 12, 2018
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
4.6 MEDIUM
AV:L/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu

Microsoft Excel does not warn a user when a macro is present in a Symbolic Link (SYLK) format file.

Weakness

The software 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
Excel Microsoft * *
Office Microsoft * *

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