eXtremail 2.1.1 and earlier does not verify the ID field (aka transaction id) in DNS responses, which makes it easier for remote attackers to conduct DNS spoofing.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Extremail | Extremail | 2.1 (including) | 2.1 (including) |
| Extremail | Extremail | 2.1.1 (including) | 2.1.1 (including) |