{"id":"CVE-2018-6347","details":"An issue in the Proxygen handling of HTTP2 parsing of headers/trailers can lead to a denial-of-service attack. This affects Proxygen prior to v2018.12.31.00.","modified":"2026-04-11T21:33:04.794176Z","published":"2018-12-31T22:29:00.687Z","references":[{"type":"FIX","url":"https://github.com/facebook/proxygen/commit/223e0aa6bc7590e86af1e917185a2e0efe160711"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/facebook/proxygen","events":[{"introduced":"0"},{"fixed":"9292784d2d5ca339a982e584f1fe099518768d53"},{"fixed":"223e0aa6bc7590e86af1e917185a2e0efe160711"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"2018.12.31.00"}],"cpe":"cpe:2.3:a:proxygen_project:proxygen:*:*:*:*:*:*:*:*","source":["CPE_FIELD","REFERENCES"]}}],"versions":["v0.18.0","v0.19.0","v0.20.0","v0.21.0","v0.22.0","v0.23.0","v0.24.0","v0.25.0","v0.26.0","v0.27.0","v0.28.0","v0.29.0","v0.30.0","v0.32.0","v2017.01.16.00","v2017.01.23.00","v2017.01.30.00","v2017.03.06.00","v2017.03.13.00","v2017.03.20.00","v2017.03.27.00","v2017.04.03.00","v2017.04.10.00","v2017.04.17.00","v2017.04.24.00","v2017.05.01.00","v2017.05.08.00","v2017.05.15.00","v2017.05.22.00","v2017.05.29.00","v2017.06.05.00","v2017.06.12.00","v2017.06.19.00","v2017.06.26.00","v2017.07.03.00","v2017.07.10.00","v2017.07.17.00","v2017.07.24.00","v2017.07.31.00","v2017.08.07.00","v2017.08.14.00","v2017.08.21.00","v2017.08.28.00","v2017.09.04.00","v2017.09.11.00","v2017.09.18.00","v2017.09.25.00","v2017.10.02.00","v2017.10.09.00","v2017.10.16.00","v2017.10.23.00","v2017.10.30.00","v2017.11.06.00","v2017.11.13.00","v2017.11.20.00","v2017.11.27.00","v2017.12.04.00","v2017.12.11.00","v2017.12.18.00","v2017.12.25.00","v2018.01.01.00","v2018.01.08.00","v2018.01.15.00","v2018.01.22.00","v2018.01.29.00","v2018.02.05.00","v2018.02.12.00","v2018.02.19.00","v2018.02.26.00","v2018.03.05.00","v2018.03.12.00","v2018.03.19.00","v2018.03.26.00","v2018.04.02.00","v2018.04.09.00","v2018.04.16.00","v2018.04.23.00","v2018.04.30.00","v2018.05.07.00","v2018.05.14.00","v2018.05.21.00","v2018.05.28.00","v2018.06.04.00","v2018.06.11.00","v2018.06.18.00","v2018.06.25.00","v2018.07.02.00","v2018.07.09.00","v2018.07.16.00","v2018.07.23.00","v2018.07.30.00","v2018.08.06.00","v2018.08.13.00","v2018.08.20.00","v2018.08.27.00","v2018.09.03.00","v2018.09.10.00","v2018.09.17.00","v2018.09.24.00","v2018.10.01.00","v2018.10.08.00","v2018.10.15.00","v2018.10.22.00","v2018.10.29.00","v2018.11.05.00","v2018.11.12.00","v2018.11.19.00","v2018.11.26.00","v2018.12.03.00","v2018.12.10.00","v2018.12.17.00","v2018.12.24.00"],"database_specific":{"vanir_signatures_modified":"2026-04-11T21:33:04Z","source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-6347.json","vanir_signatures":[{"signature_type":"Line","target":{"file":"proxygen/lib/http/session/test/HTTPSessionMocks.h"},"source":"https://github.com/facebook/proxygen/commit/223e0aa6bc7590e86af1e917185a2e0efe160711","id":"CVE-2018-6347-9f022266","digest":{"threshold":0.9,"line_hashes":["236994584668808591873749314743685538711","287831864845955272482723458710880812214","292427305810534468853244674471508994986"]},"signature_version":"v1","deprecated":false},{"signature_type":"Function","target":{"function":"HTTP2Codec::generateTrailers","file":"proxygen/lib/http/codec/HTTP2Codec.cpp"},"source":"https://github.com/facebook/proxygen/commit/223e0aa6bc7590e86af1e917185a2e0efe160711","id":"CVE-2018-6347-d3085f97","digest":{"function_hash":"134446923922520451265126210642508516068","length":856},"signature_version":"v1","deprecated":false},{"signature_type":"Function","target":{"function":"HTTP2Codec::checkNewStream","file":"proxygen/lib/http/codec/HTTP2Codec.cpp"},"source":"https://github.com/facebook/proxygen/commit/223e0aa6bc7590e86af1e917185a2e0efe160711","id":"CVE-2018-6347-de6fbf3e","digest":{"function_hash":"89815727445389674095704150648972147750","length":827},"signature_version":"v1","deprecated":false},{"signature_type":"Line","target":{"file":"proxygen/lib/http/codec/HTTP2Codec.cpp"},"source":"https://github.com/facebook/proxygen/commit/223e0aa6bc7590e86af1e917185a2e0efe160711","id":"CVE-2018-6347-e1c11fd9","digest":{"threshold":0.9,"line_hashes":["32485062120988571348754436959625851609","45393258413948763852272137480870716980","82511126764959023433973723011659798701","214671182153014458576823772625620524384","303287528376876535686496087813190539809","250034824232753198650164219143773005416","136594427481044664571705481915540189149","323341156114263285089586718342605616975"]},"signature_version":"v1","deprecated":false}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}