RHEA-2023%3A7239
A flaw was found in handling multiplexed streams in the HTTP/2 protocol. A client can repeatedly make a request for a new multiplex stream and immediately send an RST_STREAM frame to cancel it. This creates extra work for the server setting up and tearing down the streams while not hitting any server-side limit for the maximum number of active streams per connection, resulting in a denial of service due to server resource consumption. Red Hat has rated the severity of this flaw as 'Important' as the US Cybersecurity and Infrastructure Security Agency (CISA) declared this vulnerability an active exploit. CVE-2023-39325 was assigned for the Rapid Reset Attack in the Go language packages. Security Bulletin https://access.redhat.com/security/vulnerabilities/RHSB-2023-003
Risk Scores
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | edo/external-dns-rhel8@sha256:de5c2dd03fd5a3fb13390fb304f8746da5368df4764f21702e81594a225cec27_amd64 as a component of EXT-DNS-OPTR 1.2 for RHEL 8 | * |
| Red Hat | edo/external-dns-rhel8@sha256:de5c2dd03fd5a3fb13390fb304f8746da5368df4764f21702e81594a225cec27_amd64 as a component of EXT-DNS-OPTR 1.2 for RHEL 8 | edo/external-dns-rhel8@sha256:de5c2dd03fd5a3fb13390fb304f8746da5368df4764f21702e81594a225cec27_amd64 |
| Red Hat | edo/external-dns-rhel8-operator@sha256:b10916860dfedff4481fec85d682ae8b6ef2588e63b5ca0496044e0cacadb858_amd64 as a component of EXT-DNS-OPTR 1.2 for RHEL 8 | * |
| Red Hat | edo/external-dns-operator-bundle@sha256:a614ec94c2468e34e129e9ecd4bc0d1895eb67b96e77eb5ad94cd8bd507860f5_amd64 as a component of EXT-DNS-OPTR 1.2 for RHEL 8 | * |
| Red Hat | edo/external-dns-rhel8-operator@sha256:b10916860dfedff4481fec85d682ae8b6ef2588e63b5ca0496044e0cacadb858_amd64 as a component of EXT-DNS-OPTR 1.2 for RHEL 8 | edo/external-dns-rhel8-operator@sha256:b10916860dfedff4481fec85d682ae8b6ef2588e63b5ca0496044e0cacadb858_amd64 |
| Red Hat | edo/external-dns-operator-bundle@sha256:a614ec94c2468e34e129e9ecd4bc0d1895eb67b96e77eb5ad94cd8bd507860f5_amd64 as a component of EXT-DNS-OPTR 1.2 for RHEL 8 | edo/external-dns-operator-bundle@sha256:a614ec94c2468e34e129e9ecd4bc0d1895eb67b96e77eb5ad94cd8bd507860f5_amd64 |
Timeline
- Nov 15, 2023 CVE Published
- Apr 25, 2026 Security Advisory
- Apr 25, 2026 Security Advisory
- Aug 7, 2026 CVE Updated
References
- https://access.redhat.com/errata/RHEA-2023:7239 advisory
- https://issues.redhat.com/browse/NE-1299 advisory
- https://issues.redhat.com/browse/NE-1390 advisory
- https://issues.redhat.com/browse/OCPBUGS-13978 advisory
- https://issues.redhat.com/browse/OCPBUGS-3630 advisory
- https://security.access.redhat.com/data/csaf/v2/advisories/2023/rhea-2023_7239.json advisory
- https://access.redhat.com/security/cve/CVE-2023-44487 advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2242803 issue
- https://access.redhat.com/security/vulnerabilities/RHSB-2023-003 advisory
- https://www.cve.org/CVERecord?id=CVE-2023-44487 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2023-44487 advisory
- https://github.com/dotnet/announcements/issues/277 advisory
- https://pkg.go.dev/vuln/GO-2023-2102 advisory
- https://www.cisa.gov/news-events/alerts/2023/10/10/http2-rapid-reset-vulnerability-cve-2023-44487 advisory
- https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/ advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog exploit