When curl is instructed to get content using the metalink feature, and a user name and password are used to download the metalink XML file, those same credentials are then subsequently passed on to each of the servers from which curl will download or try to download the contents from. Often contrary to the users expectations and intentions and without telling the user it happened.
The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Curl | Haxx | 7.27.0 (including) | 7.78.0 (excluding) |
| Red Hat Enterprise Linux 8 | RedHat | curl-0:7.61.1-18.el8_4.1 | * |
| Red Hat Enterprise Linux 8.2 Extended Update Support | RedHat | curl-0:7.61.1-12.el8_2.3 | * |
| Curl | Ubuntu | trusty | * |
| Curl | Ubuntu | upstream | * |
| Curl | Ubuntu | xenial | * |