Vulnerability in Facebook Mvfst
CVE-2021-24029
A packet of death scenario is possible in mvfst via a specially crafted message during a QUIC session, which causes a crash via a failed assertion. Per QUIC specification, this particular message should be treated as a connection error. This issue affects mvfst versions prior to commit a67083ff4b8dcbb7ee2839da6338032030d712b0 and proxygen versions prior to v2021.03.15.00.
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: 0.012 (66.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- Facebook Mvfst — versions a67083ff4b8dcbb7ee2839da6338032030d712b0, unspecified
- Facebook Proxygen — versions v2021.03.15.00, unspecified
Weakness classification (CWE)
References
- github.com/facebookincubator/mvfst/commit/a67083ff4b8dcbb7ee2839da6338032030d71… (Patch, Third Party Advisory)
- www.facebook.com/security/advisories/cve-2021-24029 (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-24029?
- CVE-2021-24029 is a high-severity vulnerability in Facebook Mvfst, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2021-03-15.
- How severe is CVE-2021-24029?
- High severity. CVSS v3 base score is 7.5 out of 10.