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NOTICE

NIST is currently working to establish a consortium to address challenges in the NVD program and develop improved tools and methods. You will temporarily see delays in analysis efforts during this transition. We apologize for the inconvenience and ask for your patience as we work to improve the NVD program.

CVE-2023-44487 Detail

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.


Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  7.5 HIGH
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

Hyperlink Resource
http://www.openwall.com/lists/oss-security/2023/10/13/4 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2023/10/13/9 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2023/10/18/4 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2023/10/18/8 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2023/10/19/6 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2023/10/20/8 Mailing List 
https://access.redhat.com/security/cve/cve-2023-44487 Vendor Advisory 
https://arstechnica.com/security/2023/10/how-ddosers-used-the-http-2-protocol-to-deliver-attacks-of-unprecedented-size/ Press/Media Coverage  Third Party Advisory 
https://aws.amazon.com/security/security-bulletins/AWS-2023-011/ Vendor Advisory 
https://blog.cloudflare.com/technical-breakdown-http2-rapid-reset-ddos-attack/ Technical Description  Vendor Advisory 
https://blog.cloudflare.com/zero-day-rapid-reset-http2-record-breaking-ddos-attack/ Vendor Advisory 
https://blog.litespeedtech.com/2023/10/11/rapid-reset-http-2-vulnerablilty/ Vendor Advisory 
https://blog.qualys.com/vulnerabilities-threat-research/2023/10/10/cve-2023-44487-http-2-rapid-reset-attack Press/Media Coverage  Third Party Advisory 
https://blog.vespa.ai/cve-2023-44487/ Vendor Advisory 
https://bugzilla.proxmox.com/show_bug.cgi?id=4988 Issue Tracking  Third Party Advisory 
https://bugzilla.redhat.com/show_bug.cgi?id=2242803 Issue Tracking  Vendor Advisory 
https://bugzilla.suse.com/show_bug.cgi?id=1216123 Issue Tracking  Vendor Advisory 
https://cgit.freebsd.org/ports/commit/?id=c64c329c2c1752f46b73e3e6ce9f4329be6629f9 Mailing List  Patch  Vendor Advisory 
https://cloud.google.com/blog/products/identity-security/google-cloud-mitigated-largest-ddos-attack-peaking-above-398-million-rps/ Technical Description  Vendor Advisory 
https://cloud.google.com/blog/products/identity-security/how-it-works-the-novel-http2-rapid-reset-ddos-attack Technical Description  Vendor Advisory 
https://community.traefik.io/t/is-traefik-vulnerable-to-cve-2023-44487/20125 Vendor Advisory 
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 Third Party Advisory 
https://edg.io/lp/blog/resets-leaks-ddos-and-the-tale-of-a-hidden-cve Technical Description  Third Party Advisory 
https://forums.swift.org/t/swift-nio-http2-security-update-cve-2023-44487-http-2-dos/67764 Vendor Advisory 
https://gist.github.com/adulau/7c2bfb8e9cdbe4b35a5e131c66a0c088 Third Party Advisory 
https://github.com/Azure/AKS/issues/3947 Issue Tracking  Vendor Advisory 
https://github.com/Kong/kong/discussions/11741 Issue Tracking  Vendor Advisory 
https://github.com/advisories/GHSA-qppj-fm5r-hxr3 Vendor Advisory 
https://github.com/advisories/GHSA-vx74-f528-fxqg Mitigation  Patch  Vendor Advisory 
https://github.com/advisories/GHSA-xpw8-rcwv-8f8p Patch  Vendor Advisory 
https://github.com/akka/akka-http/issues/4323 Issue Tracking  Vendor Advisory 
https://github.com/alibaba/tengine/issues/1872 Issue Tracking  Vendor Advisory 
https://github.com/apache/apisix/issues/10320 Issue Tracking  Vendor Advisory 
https://github.com/apache/httpd-site/pull/10 Issue Tracking  Vendor Advisory 
https://github.com/apache/httpd/blob/afcdbeebbff4b0c50ea26cdd16e178c0d1f24152/modules/http2/h2_mplx.c#L1101-L1113 Product  Third Party Advisory 
https://github.com/apache/tomcat/tree/main/java/org/apache/coyote/http2 Product  Third Party Advisory 
https://github.com/apache/trafficserver/pull/10564 Patch  Vendor Advisory 
https://github.com/arkrwn/PoC/tree/main/CVE-2023-44487 Vendor Advisory 
https://github.com/bcdannyboy/CVE-2023-44487 Third Party Advisory 
https://github.com/caddyserver/caddy/issues/5877 Issue Tracking  Vendor Advisory 
https://github.com/caddyserver/caddy/releases/tag/v2.7.5 Release Notes  Third Party Advisory 
https://github.com/dotnet/announcements/issues/277 Mitigation  Vendor Advisory 
https://github.com/dotnet/core/blob/e4613450ea0da7fd2fc6b61dfb2c1c1dec1ce9ec/release-notes/6.0/6.0.23/6.0.23.md?plain=1#L73 Product  Release Notes  Vendor Advisory 
https://github.com/eclipse/jetty.project/issues/10679 Issue Tracking  Vendor Advisory 
https://github.com/envoyproxy/envoy/pull/30055 Patch  Vendor Advisory 
https://github.com/etcd-io/etcd/issues/16740 Issue Tracking  Patch  Vendor Advisory 
https://github.com/facebook/proxygen/pull/466 Patch  Vendor Advisory 
https://github.com/golang/go/issues/63417 Issue Tracking  Vendor Advisory 
https://github.com/grpc/grpc-go/pull/6703 Patch  Vendor Advisory 
https://github.com/h2o/h2o/pull/3291 Patch  Third Party Advisory 
https://github.com/h2o/h2o/security/advisories/GHSA-2m7v-gc89-fjqf Vendor Advisory 
https://github.com/haproxy/haproxy/issues/2312 Issue Tracking  Vendor Advisory 
https://github.com/icing/mod_h2/blob/0a864782af0a942aa2ad4ed960a6b32cd35bcf0a/mod_http2/README.md?plain=1#L239-L244 Product  Vendor Advisory 
https://github.com/junkurihara/rust-rpxy/issues/97 Issue Tracking  Vendor Advisory 
https://github.com/kazu-yamamoto/http2/commit/f61d41a502bd0f60eb24e1ce14edc7b6df6722a1 Patch  Third Party Advisory 
https://github.com/kazu-yamamoto/http2/issues/93 Issue Tracking  Third Party Advisory 
https://github.com/kubernetes/kubernetes/pull/121120 Patch  Vendor Advisory 
https://github.com/line/armeria/pull/5232 Issue Tracking  Patch  Vendor Advisory 
https://github.com/linkerd/website/pull/1695/commits/4b9c6836471bc8270ab48aae6fd2181bc73fd632 Vendor Advisory 
https://github.com/micrictor/http2-rst-stream Exploit  Third Party Advisory 
https://github.com/microsoft/CBL-Mariner/pull/6381 Patch  Vendor Advisory 
https://github.com/netty/netty/commit/58f75f665aa81a8cbcf6ffa74820042a285c5e61 Patch  Vendor Advisory 
https://github.com/nghttp2/nghttp2/pull/1961 Patch  Vendor Advisory 
https://github.com/nghttp2/nghttp2/releases/tag/v1.57.0 Release Notes  Third Party Advisory 
https://github.com/ninenines/cowboy/issues/1615 Issue Tracking  Vendor Advisory 
https://github.com/nodejs/node/pull/50121 Vendor Advisory 
https://github.com/openresty/openresty/issues/930 Issue Tracking  Vendor Advisory 
https://github.com/opensearch-project/data-prepper/issues/3474 Issue Tracking  Patch  Vendor Advisory 
https://github.com/oqtane/oqtane.framework/discussions/3367 Issue Tracking  Vendor Advisory 
https://github.com/projectcontour/contour/pull/5826 Issue Tracking  Patch  Vendor Advisory 
https://github.com/tempesta-tech/tempesta/issues/1986 Issue Tracking  Vendor Advisory 
https://github.com/varnishcache/varnish-cache/issues/3996 Issue Tracking  Vendor Advisory 
https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo Mailing List  Vendor Advisory 
https://istio.io/latest/news/security/istio-security-2023-004/ Vendor Advisory 
https://linkerd.io/2023/10/12/linkerd-cve-2023-44487/ Vendor Advisory 
https://lists.apache.org/thread/5py8h42mxfsn8l1wy6o41xwhsjlsd87q Mailing List  Vendor Advisory 
https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html Mailing List  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2023/10/msg00023.html Mailing List  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2023/10/msg00024.html Mailing List  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2023/10/msg00045.html Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2023/10/msg00047.html Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2023/11/msg00001.html Mailing List  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2023/11/msg00012.html Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MBEPPC36UBVOZZNAXFHKLFGSLCMN5LI/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3N4NJ7FR4X4FPZUGNTQAPSTVB2HB2Y4A/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BFQD3KUEMFBHPAPBGLWQC34L4OWL5HAZ/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CLB4TW7KALB3EEQWNWCN7OUIWWVWWCG2/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E72T67UPDRXHIDLO3OROR25YAMN4GGW5/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNA62Q767CFAFHBCDKYNPBMZWB7TWYVU/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HT7T2R4MQKLIF4ODV4BDLPARWFPCJ5CZ/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JIZSEFC3YKCGABA2BZW6ZJRMDZJMB7PJ/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JMEXY22BFG5Q64HQCM5CK2Q7KDKVV4TY/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KSEGD2IWKNUO3DWY4KQGUQM5BISRWHQE/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LKYHSZQFDNR7RSA7LHVLLIAQMVYCUGBG/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LNMZJCDHGLJJLXO4OXWJMTVQRNWOC7UL/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VHUHTSXLXGXS7JYKBXTA3VINUPHTNGVU/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VSRDIV77HNKUSM7SJC5BKE5JSHLHU2NK/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WE2I52RHNNU42PX6NZ2RBUHSFFJ2LVZX/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WLPRQ5TWUQQXYWBJM7ECYDAIL2YVKIUH/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X6QXN4ORIVF6XBW4WWFE7VNPVC74S45Y/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XFOIBB4YFICHDM7IBOP7PWXW3FX4HLL2/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZB43REMKRQR62NJEI7I5NQ4FSXNLBKRT/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKQSIKIAT5TJ3WSLU3RDBQ35YX4GY4V3/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLU6U2R2IC2K64NDPNMV55AUAO65MAF4/ Mailing List  Third Party Advisory 
https://lists.w3.org/Archives/Public/ietf-http-wg/2023OctDec/0025.html Mailing List  Third Party Advisory 
https://mailman.nginx.org/pipermail/nginx-devel/2023-October/S36Q5HBXR7CAIMPLLPRSSSYR4PCMWILK.html Mailing List  Patch  Third Party Advisory 
https://martinthomson.github.io/h2-stream-limits/draft-thomson-httpbis-h2-stream-limits.html Third Party Advisory 
https://msrc.microsoft.com/blog/2023/10/microsoft-response-to-distributed-denial-of-service-ddos-attacks-against-http/2/ Patch  Vendor Advisory 
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-44487 Mitigation  Patch  Vendor Advisory 
https://my.f5.com/manage/s/article/K000137106 Vendor Advisory 
https://netty.io/news/2023/10/10/4-1-100-Final.html Release Notes  Vendor Advisory 
https://news.ycombinator.com/item?id=37830987 Issue Tracking  Third Party Advisory 
https://news.ycombinator.com/item?id=37830998 Issue Tracking  Press/Media Coverage 
https://news.ycombinator.com/item?id=37831062 Issue Tracking  Third Party Advisory 
https://news.ycombinator.com/item?id=37837043 Issue Tracking 
https://openssf.org/blog/2023/10/10/http-2-rapid-reset-vulnerability-highlights-need-for-rapid-response/ Third Party Advisory 
https://seanmonstar.com/post/730794151136935936/hyper-http2-rapid-reset-unaffected Third Party Advisory 
https://security.gentoo.org/glsa/202311-09 Third Party Advisory 
https://security.netapp.com/advisory/ntap-20231016-0001/ Third Party Advisory 
https://security.paloaltonetworks.com/CVE-2023-44487 Vendor Advisory 
https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.14 Release Notes  Vendor Advisory 
https://ubuntu.com/security/CVE-2023-44487 Vendor Advisory 
https://www.bleepingcomputer.com/news/security/new-http-2-rapid-reset-zero-day-attack-breaks-ddos-records/ Third Party Advisory 
https://www.cisa.gov/news-events/alerts/2023/10/10/http2-rapid-reset-vulnerability-cve-2023-44487 Third Party Advisory  US Government Resource 
https://www.darkreading.com/cloud/internet-wide-zero-day-bug-fuels-largest-ever-ddos-event Press/Media Coverage  Third Party Advisory 
https://www.debian.org/security/2023/dsa-5521 Vendor Advisory 
https://www.debian.org/security/2023/dsa-5522 Vendor Advisory 
https://www.debian.org/security/2023/dsa-5540 Third Party Advisory 
https://www.debian.org/security/2023/dsa-5549 Third Party Advisory 
https://www.debian.org/security/2023/dsa-5558 Third Party Advisory 
https://www.debian.org/security/2023/dsa-5570 Third Party Advisory 
https://www.haproxy.com/blog/haproxy-is-not-affected-by-the-http-2-rapid-reset-attack-cve-2023-44487 Vendor Advisory 
https://www.netlify.com/blog/netlify-successfully-mitigates-cve-2023-44487/ Vendor Advisory 
https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/ Mitigation  Vendor Advisory 
https://www.openwall.com/lists/oss-security/2023/10/10/6 Mailing List  Third Party Advisory 
https://www.phoronix.com/news/HTTP2-Rapid-Reset-Attack Press/Media Coverage 
https://www.theregister.com/2023/10/10/http2_rapid_reset_zeroday/ Press/Media Coverage  Third Party Advisory 

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

Vulnerability Name Date Added Due Date Required Action
HTTP/2 Rapid Reset Attack Vulnerability 10/10/2023 10/31/2023 Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-400 Uncontrolled Resource Consumption cwe source acceptance level NIST  

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Change History

58 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2023-44487
NVD Published Date:
10/10/2023
NVD Last Modified:
02/02/2024
Source:
MITRE