Early Access — Mondoo Vulnerability Intelligence is currently in preview.
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.
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.
An attacker may be able to traverse the file system to unintended locations and read or overwrite the contents of unexpected files. If the files are used for a security mechanism then an attacker may be able to bypass the mechanism.
Windows simple shortcuts, sometimes referred to as soft links, can be exploited remotely since a ".LNK" file can be uploaded like a normal file. This can enable remote execution.
According to SOAR [REF-1479], the following detection techniques may be useful:
According to SOAR [REF-1479], the following detection techniques may be useful:
According to SOAR [REF-1479], the following detection techniques may be useful:
According to SOAR [REF-1479], the following detection techniques may be useful:
According to SOAR [REF-1479], the following detection techniques may be useful:
According to SOAR [REF-1479], the following detection techniques may be useful:
According to SOAR [REF-1479], the following detection techniques may be useful:
CVE-1999-1386Some versions of Perl follow symbolic links when running with the -e option, which allows local users to overwrite arbitrary files via a symlink attack.
CVE-2000-1178Text editor follows symbolic links when creating a rescue copy during an abnormal exit, which allows local users to overwrite the files of other users.
CVE-2004-0217Antivirus update allows local users to create or append to arbitrary files via a symlink attack on a logfile.
CVE-2003-0517Symlink attack allows local users to overwrite files.
CVE-2004-0689Window manager does not properly handle when certain symbolic links point to "stale" locations, which could allow local users to create or truncate arbitrary files.