CVE-2019-17023
6.5
MEDIUM
CVSS 3.1
EPSS 0.89%
Description
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.
How to fix CVE-2019-17023
To remediate CVE-2019-17023, upgrade the affected package to a fixed version below.
- Alpine/nss—upgrade to 3.49-r0 or later
- —upgrade to 2:3.49-1 or later
Is CVE-2019-17023 being exploited?
Low — EPSS is 0.9%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 3.49-r0
- from 0, < 2:3.49-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |