CVE-2021-22922

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

Alt Linux, Centos, Debian, Red Hat, Red Os, Rocky Linux, Suse, Curl

Haxx Curl

< 7.78.0

CVSS 3.1

6.5 MEDIUM

EPSS

4.3% (90th percentile)

Weakness

CWE-840, CWE-755

NVD status

Modified

Published

2021-08-05

No exploit for CVE-2021-22922 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.