CVE-2019-11938

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-03-10 · updated 2026-06-17
Weakness: CWE-770

Description

Java Facebook Thrift servers would not error upon receiving messages declaring containers of sizes larger than the payload. As a result, malicious clients could send short messages which would result in a large memory allocation, potentially leading to denial of service. This issue affects Facebook Thrift prior to v2019.12.09.00.

Affected products

Facebook Thrift: before 2019.12.09.00 — fixed in 2019.12.09.00

How to fix

Upgrade to a fixed version: Facebook Thrift 2019.12.09.00. Check the vendor advisory for mitigations.

References

https://github.com/facebook/fbthrift/commit/08c2d412adb214c40bb03be7587057b25d053030
https://github.com/facebook/fbthrift/commit/71c97ffdcb61cccf1f8267774e873e21ebd3ebd3
https://www.facebook.com/security/advisories/cve-2019-11938
https://github.com/facebook/fbthrift/commit/08c2d412adb214c40bb03be7587057b25d053030
https://github.com/facebook/fbthrift/commit/71c97ffdcb61cccf1f8267774e873e21ebd3ebd3
https://www.facebook.com/security/advisories/cve-2019-11938

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