CVE-2019-11921

Description

An out of bounds write is possible via a specially crafted packet in certain configurations of Proxygen due to improper handling of Base64 when parsing malformed binary content in Structured HTTP Headers. This issue affects versions of proxygen prior to v2019.07.22.00.

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.65%
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/2f07985bef9fbae124cc63e5c0272e32da4fdaec third party advisory patch
https://www.facebook.com/security/advisories/cve-2019-11921 third party advisory

Frequently Asked Questions

What is the severity of CVE-2019-11921?
CVE-2019-11921 has been scored as a critical severity vulnerability.
How to fix CVE-2019-11921?
To fix CVE-2019-11921, 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-2019-11921 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-11921 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-11921?
CVE-2019-11921 affects Facebook Proxygen.
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