CVE-2023-45288

NameCVE-2023-45288
DescriptionAn 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.
SourceCVE (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 PackageReleaseVersionStatus
golang-1.11 (PTS)buster1.11.6-1+deb10u4vulnerable
buster (security)1.11.6-1+deb10u7vulnerable
golang-1.15 (PTS)bullseye1.15.15-1~deb11u4vulnerable
golang-1.19 (PTS)bookworm1.19.8-2vulnerable
golang-1.21 (PTS)sid, trixie1.21.10-1fixed
golang-1.22 (PTS)sid, trixie1.22.3-1fixed
golang-golang-x-net (PTS)bullseye1:0.0+git20210119.5f4716e+dfsg-4vulnerable
bookworm1:0.7.0+dfsg-1vulnerable
sid, trixie1:0.25.0+dfsg-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
golang-1.11source(unstable)(unfixed)
golang-1.15source(unstable)(unfixed)
golang-1.19source(unstable)(unfixed)
golang-1.21source(unstable)1.21.9-1
golang-1.22source(unstable)1.22.2-1
golang-golang-x-netsource(unstable)1:0.23.0+dfsg-1

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

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