CVE-2019-11924
A peer could send empty handshake fragments containing only padding which would be kept in memory until a full handshake was received, resulting in memory exhaustion.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.40%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A peer could send empty handshake fragments containing only padding which would be kept in memory until a full handshake was received, resulting in memory exhaustion. This issue affects versions v2019.01.28.00 and above of fizz, until v2019.08.05.00.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.40% probability · 84th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-770
- Affected
- facebook/fizz
- Source
- cve-assign@fb.com
EPSS 2.4% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/facebookincubator/fizz/commit/3eaddb33619eaaf74a760872850c550ad8f5c52fPatch, Third Party Advisory
- https://github.com/facebookincubator/fizz/commit/6bf67137ef1ee5cd70c842b014c322b7deaf994bPatch, Third Party Advisory
- https://www.facebook.com/security/advisories/cve-2019-11924Vendor Advisory
- https://github.com/facebookincubator/fizz/commit/3eaddb33619eaaf74a760872850c550ad8f5c52fPatch, Third Party Advisory
- https://github.com/facebookincubator/fizz/commit/6bf67137ef1ee5cd70c842b014c322b7deaf994bPatch, Third Party Advisory
- https://www.facebook.com/security/advisories/cve-2019-11924Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.