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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Mixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 1:0.23.0+dfsg- |
| sid | Fixed | 1:0.23.0+dfsg- |
| forky | Fixed | 1:0.23.0+dfsg- |
| bullseye | Affected | — |
| bookworm | Affected | — |
AlmaLinux Fixed 1 release
| Version | Status | Fixed in |
|---|---|---|
| 9 | Fixed | go-toolset-1.20.12-4.el9_3.aarch64.rpm |
Red Hat Fixed 2 releases
| Version | Status | Fixed in |
|---|---|---|
| 9 | Fixed | — |
| 8 | Fixed | — |
Rocky Linux Fixed 2 releases
| Version | Status | Fixed in |
|---|---|---|
| 9 | Fixed | — |
| 8 | Fixed | — |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | net/http | <1.21.9 | 1.21.9 |
| Go | golang.org/x/net/http2 | <0.23.0 | 0.23.0 |
| Go | net/http | >=1.22.0-0,<1.22.2 | 1.22.2 |
| Go | golang.org/x/net | <0.23.0 | 0.23.0 |
| Go | stdlib | >=1.22.0-0,<1.22.2 | 1.21.9 |
References
- https://access.redhat.com/errata/RHSA-2024:1963
- https://access.redhat.com/errata/RHSA-2024:2079
- https://access.redhat.com/errata/RHSA-2024:2562
- https://access.redhat.com/errata/RHSA-2024:2724
- https://errata.rockylinux.org/RLSA-2024:3346
- https://errata.rockylinux.org/RLSA-2024:3259
- https://errata.rockylinux.org/RLSA-2024:2699
- https://errata.rockylinux.org/RLSA-2024:1962
- https://nvd.nist.gov/vuln/detail/CVE-2023-45288
- https://go.dev/cl/576155
- https://go.dev/issue/65051
- https://groups.google.com/g/golang-announce/c/YgW0sx8mN3M
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QRYFHIQ6XRKRYBI2F5UESH67BJBQXUPT
- https://nowotarski.info/http2-continuation-flood-technical-details
- https://pkg.go.dev/vuln/GO-2024-2687
- https://security.netapp.com/advisory/ntap-20240419-0009
- https://www.kb.cert.org/vuls/id/421644
- http://www.openwall.com/lists/oss-security/2024/04/03/16
- http://www.openwall.com/lists/oss-security/2024/04/05/4
- https://www.suse.com/security/cve/CVE-2023-45288.html
- https://security-tracker.debian.org/tracker/CVE-2023-45288
- https://errata.rockylinux.org/RLSA-2024:2562
- https://errata.rockylinux.org/RLSA-2024:2724
- https://access.redhat.com/errata/RHSA-2024:1962
- https://bugzilla.redhat.com/2268273
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.