Red Hat: CVE-2023-45288: golang: net/http, x/net/http2: unlimited number of CONTINUATION frames causes DoS (Multiple Advisories)
Description
An attacker may cause an HTTP/2 endpoint to read arbitrary amounts of header data by sending an excessive number of CONTINUATION frames. Maintaining HPACK state requires parsing and processing all HEADERS and CONTINUATION frames on a connection. When a request's headers exceed MaxHeaderBytes, no memory is allocated to store the excess headers, but they are still parsed. This permits an attacker to cause an HTTP/2 endpoint to read arbitrary amounts of header data, all associated with a request which is going to be rejected. These headers can include Huffman-encoded data which is significantly more expensive for the receiver to decode than for an attacker to send. The fix sets a limit on the amount of excess header frames we will process before closing a connection.
Solution(s)
- redhat-upgrade-delve
- redhat-upgrade-delve-debuginfo
- redhat-upgrade-delve-debugsource
- redhat-upgrade-git-lfs
- redhat-upgrade-git-lfs-debuginfo
- redhat-upgrade-git-lfs-debugsource
- redhat-upgrade-go-toolset
- redhat-upgrade-golang
- redhat-upgrade-golang-bin
- redhat-upgrade-golang-docs
- redhat-upgrade-golang-misc
- redhat-upgrade-golang-src
- redhat-upgrade-golang-tests
- redhat-upgrade-rhc-worker-script
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