Improper Authentication

Affecting nss package, versions <2:3.42.1-1+deb10u3

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Overview

After a HelloRetryRequest has been sent, the client may negotiate a lower protocol that TLS 1.3, resulting in an invalid state transition in the TLS State Machine. If the client gets into this state, incoming Application Data records will be ignored. This vulnerability affects Firefox < 72.

References

CVSS Score

6.5
medium severity
  • Attack Vector
    Network
  • Attack Complexity
    Low
  • Privileges Required
    None
  • User Interaction
    Required
  • Scope
    Unchanged
  • Confidentiality
    None
  • Integrity
    High
  • Availability
    None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CVE
CVE-2019-17023
CWE
CWE-287
Snyk ID
SNYK-DEBIAN10-NSS-540860
Disclosed
08 Jan, 2020
Published
07 Jan, 2020