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Ubuntu: (Multiple Advisories) (CVE-2021-22946): curl vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2021-22946): curl vulnerabilities

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Published
09/15/2021
Created
09/20/2021
Added
09/16/2021
Modified
03/22/2023

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)

  • ubuntu-upgrade-curl
  • ubuntu-upgrade-libcurl3
  • ubuntu-upgrade-libcurl3-gnutls
  • ubuntu-upgrade-libcurl3-nss
  • ubuntu-upgrade-libcurl4

References

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