medium6.5
CVE-2019-17023
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 Mach…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mozilla | Firefox | before 72.0 |
| Canonical | Ubuntu Linux | Versions 16.04, 18.04, 19.04, 19.10, 20.04 |
| Debian | Debian Linux | Version 10.0 |
Weakness classification
References
- NVD record
- CVE.org record
- https://bugzilla.mozilla.org/show_bug.cgi?id=1590001
- https://usn.ubuntu.com/4234-1/
- https://usn.ubuntu.com/4397-1/
- https://www.debian.org/security/2020/dsa-4726
- https://www.mozilla.org/security/advisories/mfsa2020-01/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1590001
- https://usn.ubuntu.com/4234-1/
- https://usn.ubuntu.com/4397-1/
- https://www.debian.org/security/2020/dsa-4726
- https://www.mozilla.org/security/advisories/mfsa2020-01/