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Red Hat: CVE-2021-22946: Requirement to use TLS not properly enforced for IMAP, POP3, and FTP protocols (Multiple Advisories)

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Red Hat: CVE-2021-22946: Requirement to use TLS not properly enforced for IMAP, POP3, and FTP protocols (Multiple Advisories)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Published
11/02/2021
Created
11/10/2021
Added
11/09/2021
Modified
12/15/2023

Description

A user can tell curl >= 7.20.0 and <= 7.78.0 to require a successful upgrade to TLS when speaking to an IMAP, POP3 or FTP server (`--ssl-reqd` on the command line or`CURLOPT_USE_SSL` set to `CURLUSESSL_CONTROL` or `CURLUSESSL_ALL` withlibcurl). This requirement could be bypassed if the server would return a properly crafted but perfectly legitimate response.This flaw would then make curl silently continue its operations **withoutTLS** contrary to the instructions and expectations, exposing possibly sensitive data in clear text over the network.

Solution(s)

  • redhat-upgrade-curl
  • redhat-upgrade-curl-debuginfo
  • redhat-upgrade-curl-debugsource
  • redhat-upgrade-curl-minimal-debuginfo
  • redhat-upgrade-libcurl
  • redhat-upgrade-libcurl-debuginfo
  • redhat-upgrade-libcurl-devel
  • redhat-upgrade-libcurl-minimal
  • redhat-upgrade-libcurl-minimal-debuginfo

References

  • DSA-5197
  • CVE-2021-22946
  • RHSA-2021:4059
  • RHSA-2022:0635

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