Vulnerability · Published Mar 15, 2021 · Assigned by facebook
CVE-2021-24029
High 7.5
In plain English
A high-severity security flaw in mvfst from Facebook. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 68% of all known vulnerabilities).
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.2%top 32.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
Weakness: CWE-617
References
- https://github.com/facebookincubator/mvfst/commit/a67083ff4b8dcbb7ee2839da6338032030d712b0 x_refsource_CONFIRM
- https://www.facebook.com/security/advisories/cve-2021-24029 x_refsource_CONFIRM