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Improper Validation of Integrity Check Value Affecting libcurl-devel package, versions <0:7.76.1-7.amzn2.0.2

Severity

0.0
medium
0
10

    Threat Intelligence

    EPSS
    0.35% (73rd percentile)

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  • Snyk ID SNYK-AMZN2-LIBCURLDEVEL-1702597
  • published 27 Sep 2021
  • disclosed 5 Aug 2021
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Introduced: 5 Aug 2021

CVE-2021-22922 Open this link in a new tab
CWE-354 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2 libcurl-devel to version 0:7.76.1-7.amzn2.0.2 or higher.
This issue was patched in ALAS2-2021-1700.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libcurl-devel package and not the libcurl-devel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

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.

References

CVSS Scores

version 3.1
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Snyk

6.5 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    Required
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    High
  • Availability (A)
    None
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NVD

6.5 medium
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SUSE

6.5 medium
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Red Hat

6.5 medium