Fixed
Created: Jul 21, 2021
Updated: Dec 3, 2021
Resolved Date: Nov 23, 2021
Found In Version: 10.21.20.1
Fix Version: 10.21.20.7
Severity: Standard
Applicable for: Wind River Linux LTS 21
Component/s: Userspace
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.
https://nvd.nist.gov/vuln/detail/CVE-2021-22922
