CVE-2021-24029

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.47%
Vendor Advisory facebook.com
Affected: Facebook mvfst
Affected: Facebook proxygen
Published at:
Updated at:

References

Link Tags
https://github.com/facebookincubator/mvfst/commit/a67083ff4b8dcbb7ee2839da6338032030d712b0 third party advisory patch
https://www.facebook.com/security/advisories/cve-2021-24029 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-24029?
CVE-2021-24029 has been scored as a high severity vulnerability.
How to fix CVE-2021-24029?
To fix CVE-2021-24029, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-24029 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-24029 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-24029?
CVE-2021-24029 affects Facebook mvfst, Facebook proxygen.
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