CVE-2019-11940

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.

Affected products

• Facebook / proxygenv2017.04.03.00 – v2017.04.03.00
• Facebook / proxygenv0.29.0 – unspecified
• Facebook / proxygenunspecified – v0.29.0

References

• PATCHhttps://github.com/facebook/proxygen/commit/f43b134cc5c19d8532e7fb670a1c02e85f7a8d4f
• VENDOR_ADVISORYhttps://www.facebook.com/security/advisories/cve-2019-11940