CVE-2023-45802
Description
When a HTTP/2 stream was reset (RST frame) by a client, there was a time window were the request's memory resources were not reclaimed immediately. Instead, de-allocation was deferred to connection close. A client could send new requests and resets, keeping the connection busy and open and causing the memory footprint to keep on growing. On connection close, all resources were reclaimed, but the process might run out of memory before that. This was found by the reporter during testing of CVE-2023-44487 (HTTP/2 Rapid Reset Exploit) with their own test client. During "normal" HTTP/2 use, the probability to hit this bug is very low. The kept memory would not become noticeable before the connection closes or times out. Users are recommended to upgrade to version 2.4.58, which fixes the issue.
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 Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 2.4.58-1 |
| sid | Fixed | 2.4.58-1 |
| forky | Fixed | 2.4.58-1 |
| bullseye | Fixed | 2.4.59-1~deb11u1 |
| bookworm | Fixed | 2.4.59-1~deb12u1 |
Red Hat Fixed 2 releases
| Version | Status | Fixed in |
|---|---|---|
| 9 | Fixed | — |
| 8 | Fixed | — |
Rocky Linux Fixed 1 release
| Version | Status | Fixed in |
|---|---|---|
| 8 | Fixed | — |
References
- https://security-tracker.debian.org/tracker/CVE-2023-45802
- https://access.redhat.com/errata/RHSA-2024:2368
- https://errata.rockylinux.org/RLSA-2024:3121
- https://www.suse.com/security/cve/CVE-2023-45802.html
- https://access.redhat.com/errata/RHSA-2024:3121
- https://bugzilla.redhat.com/2243877
- https://bugzilla.redhat.com/2245332
- https://errata.almalinux.org/8/ALSA-2024-3121.html
- https://bugzilla.redhat.com/2245153
- https://errata.almalinux.org/9/ALSA-2024-2368.html
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.