| 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.
| Source Package | Release | Version | Status |
|---|
| golang-1.11 (PTS) | buster | 1.11.6-1+deb10u4 | vulnerable |
| buster (security) | 1.11.6-1+deb10u7 | vulnerable |
| golang-1.15 (PTS) | bullseye | 1.15.15-1~deb11u4 | vulnerable |
| golang-1.19 (PTS) | bookworm | 1.19.8-2 | vulnerable |
| golang-1.21 (PTS) | sid, trixie | 1.21.9-1 | fixed |
| golang-1.22 (PTS) | sid, trixie | 1.22.2-2 | fixed |
| golang-1.7 (PTS) | stretch (security), stretch (lts), stretch | 1.7.4-2+deb9u5 | vulnerable |
| golang-golang-x-net (PTS) | bullseye | 1:0.0+git20210119.5f4716e+dfsg-4 | vulnerable |
| bookworm | 1:0.7.0+dfsg-1 | vulnerable |
| trixie | 1:0.23.0+dfsg-1 | fixed |
| sid | 1:0.24.0+dfsg-1 | fixed |
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)
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
[stretch] - golang-1.7 <postponed> (Limited support, follow buster DLAs)