netty-codec-http2: Netty: Denial of Service due to HTTP/2 max header size handling

A flaw was found in Netty, a network application framework. A remote attacker can exploit a vulnerability in the HTTP/2 Hypertext Transfer Protocol version 2 maximum header size handling. By sending a specific SETTINGSMAXHEADERLISTSIZE setting, an attacker can cause Netty to produce an exception...

CVE-2026-55833 Netty SPDY zlib header block continues decoded expansion after maxHeaderSize truncation

Netty is a network application framework for development of protocol servers and clients. Prior to 4.1.136.Final and 4.2.16.Final, Netty SPDY header decoding continues inflating zlib-compressed header blocks after the raw header parser has exceeded maxHeaderSize and marked the frame truncated in...

kernel: netfilter: nf_reject_ipv6: fix potential crash in nf_send_reset6()

A flaw was found in the Linux kernel's netfilter component, specifically within the nfrejectipv6 module. This vulnerability arises when the system attempts to process an IPv6 packet where the network device's header length is unexpectedly zero, leading to a kernel crash. A remote attacker could...

GHSA-889J-63JV-QHR8 Eclipse Jetty HTTP/2 client can force the server to allocate a humongous byte buffer that may lead to OoM and subsequently the JVM to exit

Original Report In Eclipse Jetty versions 12.0.0 to 12.0.16 included, an HTTP/2 client can specify a very large value for the HTTP/2 settings parameter SETTINGSMAXHEADERLISTSIZE. The Jetty HTTP/2 server does not perform validation on this setting, and tries to allocate a ByteBuffer of the specifi...

kernel: netfilter: nf_reject_ipv6: fix potential crash in nf_send_reset6()

A flaw was found in the Linux kernel's netfilter component, specifically within the nfrejectipv6 module. This vulnerability arises when the system attempts to process an IPv6 packet where the network device's header length is unexpectedly zero, leading to a kernel crash. A remote attacker could...

AZL-39232 CVE-2023-45288 affecting package kata-containers for versions less than 3.2.0.azl2-1

An attacker may cause an HTTP/2 endpoint to read arbitrary amounts of header data by sending an excessive number of CONTINUATION frames. Maintaining HPACK state requires parsing and processing all HEADERS and CONTINUATION frames on a connection. When a request's headers exceed MaxHeaderBytes, no...

AZL-38569 CVE-2023-45288 affecting package docker-compose for versions less than 2.27.0-1

An attacker may cause an HTTP/2 endpoint to read arbitrary amounts of header data by sending an excessive number of CONTINUATION frames. Maintaining HPACK state requires parsing and processing all HEADERS and CONTINUATION frames on a connection. When a request's headers exceed MaxHeaderBytes, no...

What is maximum HTTP header length on NetScaler

This article explains the maximum HTTP header length on NetScaler...

DEBIAN-CVE-2023-5379

A flaw was found in Undertow. When an AJP request is sent that exceeds the max-header-size attribute in ajp-listener, JBoss EAP is marked in an error state by modcluster in httpd, causing JBoss EAP to close the TCP connection without returning an AJP response. This happens because modproxycluster...

Malformed CAR panics and excessive memory usage

Impact Versions impacted = [email protected] = [email protected] Description of user-facing changes...

golang: net/http: panic in ReadRequest and ReadResponse when reading a very large header

A vulnerability was detected in net/http of the Go standard library when parsing very large HTTP header values, causing a crash and subsequent denial of service. This vulnerability affects both clients and servers written in Go, however, servers are only vulnerable if the value of MaxHeaderBytes...

golang: net/http: panic in ReadRequest and ReadResponse when reading a very large header

A vulnerability was detected in net/http of the Go standard library when parsing very large HTTP header values, causing a crash and subsequent denial of service. This vulnerability affects both clients and servers written in Go, however, servers are only vulnerable if the value of MaxHeaderBytes...

CVE-2021-32640

ws is an open source WebSocket client and server library for Node.js. A specially crafted value of the Sec-Websocket-Protocol header can be used to significantly slow down a ws server. The vulnerability has been fixed in [email protected]...

CVE-2021-32640

ws is an open source WebSocket client and server library for Node.js. A specially crafted value of the Sec-Websocket-Protocol header can be used to significantly slow down a ws server. The vulnerability has been fixed in [email protected]...

haproxy: http_get_hdr()/get_ip_from_hdr2() MAX_HDR_HISTORY handling denial of service

HAProxy 1.4 before 1.4.24 and 1.5 before 1.5-dev19, when configured to use hdrip or other "hdr" functions with a negative occurrence count, allows remote attackers to cause a denial of service negative array index usage and crash via an HTTP header with a certain number of values, related to the...

tomcat: remote DoS via NIO connector

Apache Tomcat 7.0.0 through 7.0.6 and 6.0.0 through 6.0.30 does not enforce the maxHttpHeaderSize limit for requests involving the NIO HTTP connector, which allows remote attackers to cause a denial of service OutOfMemoryError via a crafted request...

tomcat: remote DoS via NIO connector

Apache Tomcat 7.0.0 through 7.0.6 and 6.0.0 through 6.0.30 does not enforce the maxHttpHeaderSize limit for requests involving the NIO HTTP connector, which allows remote attackers to cause a denial of service OutOfMemoryError via a crafted request...