CVE-2021-22922

2021-08-0500:00:00

CWE-840

hackerone

www.cve.org

6.9 Medium

AI Score

Confidence

High

0.004 Low

EPSS

Percentile

72.1%

JSON

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.

CNA Affected

[
  {
    "vendor": "n/a",
    "product": "https://github.com/curl/curl",
    "versions": [
      {
        "version": "curl 7.27.0  to and including 7.77.0",
        "status": "affected"
      }
    ]
  }
]