CVE-2023-44487
MediumExploitedPublic exploitThe HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.
Published May 9, 2024 · Updated Oct 16, 2026 · Also known as ALPINE-CVE-2023-44487, BIT-apisix-2023-44487, BIT-aspnet-core-2023-44487, BIT-contour-2023-44487, BIT-dotnet-2023-44487, BIT-dotnet-sdk-2023-44487, BIT-envoy-2023-44487, BIT-golang-2023-44487, BIT-jenkins-2023-44487, BIT-kong-2023-44487, BIT-nginx-2023-44487, BIT-nginx-gateway-2023-44487, BIT-nginx-ingress-controller-2023-44487, BIT-node-2023-44487, BIT-node-min-2023-44487, BIT-solr-2023-44487, BIT-tomcat-2023-44487, BIT-varnish-2023-44487, DEBIAN-CVE-2023-44487, DLA-3638-1, DLA-3656-1, DSA-5570-1, GHSA-678g-xcrp-xp3w, GHSA-qppj-fm5r-hxr3, HTTP/2 Rapid Reset, JLSEC-2026-3, ROOT-APP-MAVEN-CVE-2023-44487, ROOT-OS-DEBIAN-11-CVE-2023-44487, ROOT-OS-DEBIAN-12-CVE-2023-44487, Rapid Reset, SUSE-SU-2023:4163-1, SUSE-SU-2023:4199-1, SUSE-SU-2023:4200-1, SUSE-SU-2023:4295-1, SUSE-SU-2023:4492-1, SUSE-SU-2023:4624-1, UBUNTU-CVE-2023-44487, USN-6427-1, USN-6505-1, USN-7469-1, USN-7469-2, USN-7469-3, USN-7469-4, USN-7892-1
Key Facts
Patch immediately- CVE-2023-44487 is a medium-severity vulnerability (CVSS 6.9 v4) affecting dotnet6-build (alpine), dotnet6-runtime (alpine), dotnet7-build (alpine) and 22 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Oct 10, 2023. Public exploit code is available.
- EPSS estimates a 100% probability of exploitation in the next 30 days.
- Fixed versions are available, including 3scale-amp2/3scale-rhel7-operator:1.16.7 2, aactl 0.4.12-r49, abseil-cpp 20230802.1-150400.10.4.1.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v4
6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:A
EPSS (30-day exploit likelihood)
100%
Higher than 99.9% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2023-44487 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Oct 10, 2023 | Oct 31, 2023 | Not reported |
| Industry KEV feed | Oct 10, 2023 | Oct 31, 2023 | Not reported |
| CIRCL KEV | Oct 10, 2023 | Oct 31, 2023 | Not reported |
| ENISA EUVD | Oct 10, 2023 | n/a | Not reported |
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Affected Products
3,820 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| dotnet6-buildalpine | See advisory | 6.0.124-r0 |
| dotnet6-runtimealpine | See advisory | 6.0.24-r0 |
| dotnet7-buildalpine | See advisory | 7.0.113-r0 |
| dotnet7-runtimealpine | See advisory | 7.0.13-r0 |
| goalpine | See advisory | 1.20.10-r0 |
Patched Releases
3scale-amp2/3scale-rhel7-operator:1.16.7
2
aactl
0.4.12-r49
abseil-cpp
20230802.1-150400.10.4.1
abseil-cpp-devel
20230802.1-150400.10.4.1
advanced-cluster-security/rhacs-central-db-rhel8:4.1.4
4
advanced-cluster-security/rhacs-central-db-rhel8:4.3.0
4
advanced-cluster-security/rhacs-collector-rhel8:4.1.4
5
advanced-cluster-security/rhacs-collector-rhel8:4.3.0
5
advanced-cluster-security/rhacs-collector-slim-rhel8:4.1.4
4
advanced-cluster-security/rhacs-collector-slim-rhel8:4.3.0
2
advanced-cluster-security/rhacs-main-rhel8:3.74.7
5
advanced-cluster-security/rhacs-main-rhel8:4.1.4
8
advanced-cluster-security/rhacs-main-rhel8:4.2.2
4
advanced-cluster-security/rhacs-main-rhel8:4.3.0
5
advanced-cluster-security/rhacs-operator-bundle:4.1.4
7
advanced-cluster-security/rhacs-operator-bundle:4.3.0
7
advanced-cluster-security/rhacs-rhel8-operator:4.1.4
5
advanced-cluster-security/rhacs-rhel8-operator:4.3.0
4
advanced-cluster-security/rhacs-roxctl-rhel8:4.1.4
5
advanced-cluster-security/rhacs-roxctl-rhel8:4.3.0
4
advanced-cluster-security/rhacs-scanner-db-rhel8:4.1.4
5
advanced-cluster-security/rhacs-scanner-db-rhel8:4.3.0
5
advanced-cluster-security/rhacs-scanner-db-slim-rhel8:4.1.4
4
advanced-cluster-security/rhacs-scanner-db-slim-rhel8:4.3.0
2
advanced-cluster-security/rhacs-scanner-rhel8:4.1.4
5
Timeline
Added to CISA KEV
Oct 10, 2023
Added to Industry KEV feed
Oct 10, 2023
Added to CIRCL KEV
Oct 10, 2023
Added to ENISA EUVD
Oct 10, 2023
Publicly disclosed
May 9, 2024
Last updated
Oct 16, 2026
Weakness Type
- CWE-400 Uncontrolled Resource Consumption
References
- advisoryRHBA-2023:5806
- advisoryRHBA-2023:5949
- advisoryRHBA-2023:6078
- advisoryRHBA-2023:6109
- advisoryRHBA-2023:6254
FAQ
Common Questions.
The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.
Affected: dotnet6-build (alpine); dotnet6-runtime (alpine); dotnet7-build (alpine), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Oct 10, 2023.
Yes. It was added on Oct 10, 2023 with a federal remediation due date of Oct 31, 2023.
Public exploit code is available.
Fixed versions are available, including 3scale-amp2/3scale-rhel7-operator:1.16.7 2, aactl 0.4.12-r49, abseil-cpp 20230802.1-150400.10.4.1.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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