Resource exhaustion in Facebook Fizz
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. This issue affects versions v2019.01.28.00 and above of fizz, until v2019.08.05.00.
EPSS: 0.024 (82.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Facebook Fizz — versions v2019.08.12.00, v2019.01.28.00
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve-assign@fb.com (Patch, Third Party Advisory, x_refsource_MISC)
- cve-assign@fb.com (Patch, Third Party Advisory, x_refsource_MISC)
- cve-assign@fb.com (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2019-11924?
- CVE-2019-11924 is a high-severity vulnerability in Facebook Fizz, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2019-08-20.
- How severe is CVE-2019-11924?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2019-11924 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.