Improper Validation of Integrity Check Value

Affecting curl package, versions <7.78.0-r0

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NVD Description

Note: Versions mentioned in the description apply to the upstream curl package. See Remediation section below for Alpine:3.12 relevant versions.

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.

Remediation

Upgrade Alpine:3.12 curl to version 7.78.0-r0 or higher.

References

CVSS Score

6.5
medium severity
  • Attack Vector
    Network
  • Attack Complexity
    Low
  • Privileges Required
    None
  • User Interaction
    Required
  • Scope
    Unchanged
  • Confidentiality
    None
  • Integrity
    High
  • Availability
    None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CVE
CVE-2021-22922
CWE
CWE-354
Snyk ID
SNYK-ALPINE312-CURL-1533450
Disclosed
05 Aug, 2021
Published
26 Jul, 2021