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CVE-2023-44487Date: (C)2023-10-10   (M)2024-04-15


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.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 7.5CVSS Score :
Exploit Score: 3.9Exploit Score:
Impact Score: 3.6Impact Score:
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: NETWORKAccess Vector:
Attack Complexity: LOWAccess Complexity:
Privileges Required: NONEAuthentication:
User Interaction: NONEConfidentiality:
Scope: UNCHANGEDIntegrity:
Confidentiality: NONEAvailability:
Integrity: NONE 
Availability: HIGH 
  
Reference:
DSA-5521
DSA-5522
DSA-5540
DSA-5549
DSA-5558
DSA-5570
FEDORA-2023-0259c3f26f
FEDORA-2023-17efd3f2cd
FEDORA-2023-1caffb88af
FEDORA-2023-2a9214af5f
FEDORA-2023-3f70b8d406
FEDORA-2023-492b7be466
FEDORA-2023-4bf641255e
FEDORA-2023-4d2fd884ea
FEDORA-2023-54fadada12
FEDORA-2023-5ff7bf1dd8
FEDORA-2023-7934802344
FEDORA-2023-7b52921cae
FEDORA-2023-822aab0a5a
FEDORA-2023-b2c50535cb
FEDORA-2023-c0c6a91330
FEDORA-2023-d5030c983c
FEDORA-2023-dbe64661af
FEDORA-2023-e9c04d81c1
FEDORA-2023-ed2642fd58
FEDORA-2023-f66fc0f62a
FEDORA-2023-fe53e13b5b
GLSA-202311-09
https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html
https://lists.debian.org/debian-lts-announce/2023/10/msg00024.html
https://lists.debian.org/debian-lts-announce/2023/10/msg00023.html
https://lists.debian.org/debian-lts-announce/2023/10/msg00045.html
https://lists.debian.org/debian-lts-announce/2023/10/msg00047.html
https://lists.debian.org/debian-lts-announce/2023/11/msg00001.html
https://lists.debian.org/debian-lts-announce/2023/11/msg00012.html
http://www.openwall.com/lists/oss-security/2023/10/13/9
http://www.openwall.com/lists/oss-security/2023/10/18/8
http://www.openwall.com/lists/oss-security/2023/10/18/4
http://www.openwall.com/lists/oss-security/2023/10/19/6
http://www.openwall.com/lists/oss-security/2023/10/20/8
https://access.redhat.com/security/cve/cve-2023-44487
https://arstechnica.com/security/2023/10/how-ddosers-used-the-http-2-protocol-to-deliver-attacks-of-unprecedented-size/
https://aws.amazon.com/security/security-bulletins/AWS-2023-011/
https://blog.cloudflare.com/technical-breakdown-http2-rapid-reset-ddos-attack/
https://blog.cloudflare.com/zero-day-rapid-reset-http2-record-breaking-ddos-attack/
https://blog.litespeedtech.com/2023/10/11/rapid-reset-http-2-vulnerablilty/
https://blog.qualys.com/vulnerabilities-threat-research/2023/10/10/cve-2023-44487-http-2-rapid-reset-attack
https://blog.vespa.ai/cve-2023-44487/
https://bugzilla.proxmox.com/show_bug.cgi?id=4988
https://bugzilla.redhat.com/show_bug.cgi?id=2242803
https://bugzilla.suse.com/show_bug.cgi?id=1216123
https://cgit.freebsd.org/ports/commit/?id=c64c329c2c1752f46b73e3e6ce9f4329be6629f9
https://cloud.google.com/blog/products/identity-security/google-cloud-mitigated-largest-ddos-attack-peaking-above-398-million-rps/
https://cloud.google.com/blog/products/identity-security/how-it-works-the-novel-http2-rapid-reset-ddos-attack
https://community.traefik.io/t/is-traefik-vulnerable-to-cve-2023-44487/20125
https://discuss.hashicorp.com/t/hcsec-2023-32-vault-consul-and-boundary-affected-by-http-2-rapid-reset-denial-of-service-vulnerability-cve-2023-44487/59715
https://edg.io/lp/blog/resets-leaks-ddos-and-the-tale-of-a-hidden-cve
https://forums.swift.org/t/swift-nio-http2-security-update-cve-2023-44487-http-2-dos/67764
https://gist.github.com/adulau/7c2bfb8e9cdbe4b35a5e131c66a0c088
https://github.com/Azure/AKS/issues/3947
https://github.com/Kong/kong/discussions/11741
https://github.com/advisories/GHSA-qppj-fm5r-hxr3
https://github.com/advisories/GHSA-vx74-f528-fxqg
https://github.com/advisories/GHSA-xpw8-rcwv-8f8p
https://github.com/akka/akka-http/issues/4323
https://github.com/alibaba/tengine/issues/1872
https://github.com/apache/apisix/issues/10320
https://github.com/apache/httpd-site/pull/10
https://github.com/apache/httpd/blob/afcdbeebbff4b0c50ea26cdd16e178c0d1f24152/modules/http2/h2_mplx.c#L1101-L1113
https://github.com/apache/tomcat/tree/main/java/org/apache/coyote/http2
https://github.com/apache/trafficserver/pull/10564
https://github.com/arkrwn/PoC/tree/main/CVE-2023-44487
https://github.com/bcdannyboy/CVE-2023-44487
https://github.com/caddyserver/caddy/issues/5877
https://github.com/caddyserver/caddy/releases/tag/v2.7.5
https://github.com/dotnet/announcements/issues/277
https://github.com/dotnet/core/blob/e4613450ea0da7fd2fc6b61dfb2c1c1dec1ce9ec/release-notes/6.0/6.0.23/6.0.23.md?plain=1#L73
https://github.com/eclipse/jetty.project/issues/10679
https://github.com/envoyproxy/envoy/pull/30055
https://github.com/etcd-io/etcd/issues/16740
https://github.com/facebook/proxygen/pull/466
https://github.com/golang/go/issues/63417
https://github.com/grpc/grpc-go/pull/6703
https://github.com/h2o/h2o/pull/3291
https://github.com/h2o/h2o/security/advisories/GHSA-2m7v-gc89-fjqf
https://github.com/haproxy/haproxy/issues/2312
https://github.com/icing/mod_h2/blob/0a864782af0a942aa2ad4ed960a6b32cd35bcf0a/mod_http2/README.md?plain=1#L239-L244
https://github.com/junkurihara/rust-rpxy/issues/97
https://github.com/kazu-yamamoto/http2/commit/f61d41a502bd0f60eb24e1ce14edc7b6df6722a1
https://github.com/kazu-yamamoto/http2/issues/93
https://github.com/kubernetes/kubernetes/pull/121120
https://github.com/line/armeria/pull/5232
https://github.com/linkerd/website/pull/1695/commits/4b9c6836471bc8270ab48aae6fd2181bc73fd632
https://github.com/micrictor/http2-rst-stream
https://github.com/microsoft/CBL-Mariner/pull/6381
https://github.com/netty/netty/commit/58f75f665aa81a8cbcf6ffa74820042a285c5e61
https://github.com/nghttp2/nghttp2/pull/1961
https://github.com/nghttp2/nghttp2/releases/tag/v1.57.0
https://github.com/ninenines/cowboy/issues/1615
https://github.com/nodejs/node/pull/50121
https://github.com/openresty/openresty/issues/930
https://github.com/opensearch-project/data-prepper/issues/3474
https://github.com/oqtane/oqtane.framework/discussions/3367
https://github.com/projectcontour/contour/pull/5826
https://github.com/tempesta-tech/tempesta/issues/1986
https://github.com/varnishcache/varnish-cache/issues/3996
https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo
https://istio.io/latest/news/security/istio-security-2023-004/
https://linkerd.io/2023/10/12/linkerd-cve-2023-44487/
https://lists.apache.org/thread/5py8h42mxfsn8l1wy6o41xwhsjlsd87q
https://lists.w3.org/Archives/Public/ietf-http-wg/2023OctDec/0025.html
https://mailman.nginx.org/pipermail/nginx-devel/2023-October/S36Q5HBXR7CAIMPLLPRSSSYR4PCMWILK.html
https://martinthomson.github.io/h2-stream-limits/draft-thomson-httpbis-h2-stream-limits.html
https://msrc.microsoft.com/blog/2023/10/microsoft-response-to-distributed-denial-of-service-ddos-attacks-against-http/2/
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-44487
https://my.f5.com/manage/s/article/K000137106
https://netty.io/news/2023/10/10/4-1-100-Final.html
https://news.ycombinator.com/item?id=37830987
https://news.ycombinator.com/item?id=37830998
https://news.ycombinator.com/item?id=37831062
https://news.ycombinator.com/item?id=37837043
https://openssf.org/blog/2023/10/10/http-2-rapid-reset-vulnerability-highlights-need-for-rapid-response/
https://seanmonstar.com/post/730794151136935936/hyper-http2-rapid-reset-unaffected
https://security.netapp.com/advisory/ntap-20231016-0001/
https://security.paloaltonetworks.com/CVE-2023-44487
https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.14
https://ubuntu.com/security/CVE-2023-44487
https://www.bleepingcomputer.com/news/security/new-http-2-rapid-reset-zero-day-attack-breaks-ddos-records/
https://www.cisa.gov/news-events/alerts/2023/10/10/http2-rapid-reset-vulnerability-cve-2023-44487
https://www.darkreading.com/cloud/internet-wide-zero-day-bug-fuels-largest-ever-ddos-event
https://www.haproxy.com/blog/haproxy-is-not-affected-by-the-http-2-rapid-reset-attack-cve-2023-44487
https://www.netlify.com/blog/netlify-successfully-mitigates-cve-2023-44487/
https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/
https://www.openwall.com/lists/oss-security/2023/10/10/6
https://www.phoronix.com/news/HTTP2-Rapid-Reset-Attack
https://www.theregister.com/2023/10/10/http2_rapid_reset_zeroday/

CWE    1
CWE-400
OVAL    201
oval:org.secpod.oval:def:1507075
oval:org.secpod.oval:def:1507077
oval:org.secpod.oval:def:1507079
oval:org.secpod.oval:def:126358
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