When curl is instructed to download content using the metalink feature, thecontents is verified against a hash provided in the metalink XML file.The metalink XML file points out to the client how to get the same contentfrom a set of different URLs, potentially hosted by different servers and theclient can then download the file from one or several of them. In a serial orparallel manner.If one of the servers hosting the contents has been breached and the contentsof the specific file on that server is replaced with a modified payload, curlshould detect this when the hash of the file mismatches after a completeddownload. It should remove the contents and instead try getting the contentsfrom another URL. This is not done, and instead such a hash mismatch is onlymentioned in text and the potentially malicious content is kept in the file ondisk.
| 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 | * |