Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 15.1.4.1, 15.1.5, 15.1.5.1, 15.1.6
Fixed In:
17.0.0, 16.1.2.2, 15.1.6.1, 14.1.5
Opened: Jun 09, 2021 Severity: 3-Major
BIG-IP proxying http2 -> http1.1. In response to a HEAD request, pool member sends response with "Transfer-Encoding: chunked" header without chunked payload. BIG-IP sends "Transfer-Encoding: chunked" header back to http2 client which generates RST_STREAM, PROTOCOL_ERROR. According to RFC 7450 a proxy SHOULD remove such headers.
Http2 connection is reset
1) H2 <-> H1 is configured on virtual server 2) HEAD request over http2->http1.1 gateway getting chunked response.
iRule to remove "Transfer-Encoding: Chunked" header from response.
None