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Red Hat: CVE-2021-20230: (Multiple Advisories)

Severity:
4
CVSS:
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published:
02/22/2020
Created:
02/24/2020
Added:
02/23/2020
Modified:
02/23/2020

Description:

A flaw was found in stunnel, where it improperly validates client certificates when it is configured to use both redirect and verifyChain options. This flaw allows an attacker with a certificate signed by a Certificate Authority, which is not the one accepted by the stunnel server, to access the tunneled service instead of being redirected to the address specified in the redirect option. The highest threat from this vulnerability is to confidentiality.'

Solution(s)


  • redhat-upgrade-stunnel
  • redhat-upgrade-stunnel-debuginfo
  • redhat-upgrade-stunnel-debugsource

Reference(s)

  • CVE-2021-20230
  • RHSA-2021:0618
  • RHSA-2021:0619
  • RHSA-2021:0620
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