The python SDK before 3.1.0.6 and CLI before 3.1.0.8 for oVirt 3.1 does not check the server SSL certificate against the client keys, which allows remote attackers to spoof a server via a man-in-the-middle (MITM) attack.

The setup_logging function in log.h in SANLock uses world-writable permissions for /var/log/sanlock.log, which allows local users to overwrite the file content or bypass intended disk-quota restrictions via standard filesystem write operations.

Session fixation vulnerability in the web admin interface in oVirt 3.4.0 and earlier allows remote attackers to hijack web sessions via unspecified vectors.

The REST API in oVirt 3.4.0 and earlier stores session IDs in HTML5 local storage, which allows remote attackers to obtain sensitive information via a crafted web page.

oVirt Engine before 3.5.0 does not include the HTTPOnly flag in a Set-Cookie header for the session IDs, which makes it easier for remote attackers to obtain potentially sensitive information via script access to this cookie.