An issue was discovered in Hola 1.79.859. An unprivileged user could modify or overwrite the executable with arbitrary code, which would be executed the next time the service is started. Depending on the user that the service runs as, this could result in privilege escalation. The issue exists because of the SERVICE_ALL_ACCESS access right for the hola_svc and hola_updater services.

Hola VPN 1.34 has weak permissions (Everyone:F) under %PROGRAMFILES%, which allows local users to gain privileges via a Trojan horse 7za.exe or hola.exe file.

HolaCMS 1.4.9 does not restrict file access to the holaDB/votes directory, which allows remote attackers to overwrite arbitrary files via a modified vote_filename parameter.

Directory traversal vulnerability in HolaCMS 1.4.9-1 allows remote attackers to overwrite arbitrary files via a "holaDB/votes" followed by a .. (dot dot) in the vote_filename parameter, which bypasses the check by HolaCMS to ensure that the file is in the holaDB/votes directory.