What’s Vulnerable › Vulnerabilities

CVE-2021-22922

Description

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.

Affected products

How to fix

Upgrade to a fixed version: curl 7.78.0; Siemens Sinec Infrastructure Network Services 1.0.1.1; Splunk Universal Forwarder 8.2.12, 9.0.6. Check the vendor advisory for mitigations.

References

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