Decompression Vulnerability in Proxygen HTTP2 by Facebook
CVE-2019-11940

9.8CRITICAL

Key Information:

Vendor

Facebook

Status
Proxygen
Vendor
CVE Published:
4 December 2019

What is CVE-2019-11940?

A vulnerability exists in Facebook's Proxygen related to the HTTP2 protocol where a sequence of unexpected header table resize operations can lead to a corrupted state. This condition results in a use-after-free scenario, which may trigger undefined behavior and potentially impact application stability. Affected versions range from Proxygen v0.29.0 to v2017.04.03.00, necessitating immediate attention to apply necessary updates and patches.

Affected Version(s)

Proxygen v2017.04.03.00

Proxygen v0.29.0

Proxygen < unspecified

References

https://github.com/facebook/proxygen/commit/f43b134cc5c19...
x_refsource_MISC
https://www.facebook.com/security/advisories/cve-2019-11940
x_refsource_CONFIRM

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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