| Name | CVE-2023-45288 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
The information below is based on the following data on fixed versions.
Notes
[bookworm] - golang-1.19 <no-dsa> (Minor issue)
[bullseye] - golang-1.15 <no-dsa> (Minor issue)
[buster] - golang-1.11 <postponed> (Limited support, minor issue, follow bullseye DSAs/point-releases)
[bookworm] - golang-golang-x-net <no-dsa> (Minor issue)
[bullseye] - golang-golang-x-net <no-dsa> (Minor issue)
https://github.com/golang/go/issues/65051
https://github.com/golang/go/commit/e55d7cf8435ba4e58d4a5694e63b391821d4ee9b (go1.22.2)
https://github.com/golang/go/commit/ae5913347d15cf7d1f218916c22717e5739a9ea3 (go1.21.9)
https://www.kb.cert.org/vuls/id/421644