Vulnerability in Facebook Fizz
CVE-2023-23759
There is a vulnerability in the fizz library prior to v2023.01.30.00 where a CHECK failure can be triggered remotely. This behavior requires the client supported cipher advertisement changing between the original ClientHello and the second ClientHello, crashing the process (impact is limited to denial of service).
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.007 (52.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Facebook Fizz — versions v0.0.0.0
Weakness classification (CWE)
References
- www.facebook.com/security/advisories/cve-2023-23759 (Patch, Vendor Advisory)
- github.com/facebookincubator/fizz/commit/8d3649841597bedfb6986c30431ebad0eb2152… (Patch)
Frequently asked questions
- What is CVE-2023-23759?
- CVE-2023-23759 is a high-severity vulnerability in Facebook Fizz, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2023-05-18.
- How severe is CVE-2023-23759?
- High severity. CVSS v3 base score is 7.5 out of 10.