Improper Input Validation Affecting curl package, versions <0:7.61.1-18.el8_4.1


0.0
medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Integrity High
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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

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  • Snyk ID SNYK-CENTOS8-CURL-2119102
  • published 26 Jul 2021
  • disclosed 21 Jul 2021

How to fix?

Upgrade Centos:8 curl to version 0:7.61.1-18.el8_4.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream curl package and not the curl package as distributed by Centos:8. See How to fix? for Centos:8 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.