CVE-2019-11940

Description

In the course of decompressing HPACK inside the HTTP2 protocol, an unexpected sequence of header table resize operations can place the header table into a corrupted state, leading to a use-after-free condition and undefined behavior. This issue affects Proxygen from v0.29.0 until v2017.04.03.00.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.42%
Third-Party Advisory github.com Third-Party Advisory facebook.com
Affected: Facebook Proxygen
Published at:
Updated at:

References

Link Tags
https://github.com/facebook/proxygen/commit/f43b134cc5c19d8532e7fb670a1c02e85f7a8d4f third party advisory patch
https://www.facebook.com/security/advisories/cve-2019-11940 third party advisory

Frequently Asked Questions

What is the severity of CVE-2019-11940?
CVE-2019-11940 has been scored as a critical severity vulnerability.
How to fix CVE-2019-11940?
To fix CVE-2019-11940, 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-2019-11940 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-11940 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-2019-11940?
CVE-2019-11940 affects Facebook Proxygen.
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