Home/CVE/In the course of decompressing HPACK inside the HTTP2 protocol, an unexpected sequence of header table resize operations
CVE

CVE-2019-11940

In the course of decompressing HPACK inside the HTTP2 protocol, an unexpected sequence of header table resize operations

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.

CRITICAL · CVSS 9.8 EPSS 0.00418
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-416Use After Free
CWE-416Use After Free
▤

Affected Products & Versions

1
facebook proxygen>= 0.29.0 and <= 2017.04.03.00
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · cve-assign@fb.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD04 Dec 2019 · 05:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/facebook/proxygen/commit/f43b134cc5c19d8532e7fb670a1c02e85f7a8d4fPatchThird Party Advisory
https://www.facebook.com/security/advisories/cve-2019-11940Third Party Advisory
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