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.
References (2)
Core 2
Core References
Patch, Third Party Advisory x_refsource_misc
https://github.com/facebook/proxygen/commit/f43b134cc5c19d8532e7fb670a1c02e85f7a8d4f
Third Party Advisory x_refsource_confirm
https://www.facebook.com/security/advisories/cve-2019-11940
Scores
CVSS v3
9.8
EPSS
0.0136
EPSS Percentile
68.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-416
Status
published
Products (1)
facebook/proxygen
0.29.0 - 2017.04.03.00
Published
Dec 04, 2019
Tracked Since
Feb 18, 2026