netty-codec-haproxy: Netty-codec-haproxy: Denial of Service via malformed HAProxy message

A flaw was found in netty-codec-haproxy, a component of the Netty network application framework. A remote attacker can exploit this vulnerability by sending a specially crafted HAProxy message with a malformed PP2TYPESSL TLV Type-Length-Value header. This can lead to an IndexOutOfBoundsException...

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...

netty-codec-http: Netty: Data manipulation via request-boundary confusion in HttpObjectDecoder

A flaw was found in Netty. The HttpObjectDecoder component, which processes incoming HTTP requests, incorrectly skips certain control characters and whitespace before reading the first request line. This behavior, which goes beyond standard HTTP protocol requirements, can lead to request-boundary...

netty-handler: Netty: Improper trust manager handling leads to hostname verification bypass

A flaw was found in Netty, a network application framework. This vulnerability allows a remote attacker to bypass hostname verification due to improper handling of user-supplied trust managers. When a client is configured with a plain X.509 Trust Manager X509TrustManager, it fails to perform...

netty-codec-haproxy: Netty HAProxy PROXY protocol v2 codec: Denial of Service via memory leak from crafted PROXY protocol headers

A flaw was found in the Netty HAProxy PROXY protocol v2 codec. A remote attacker can exploit this vulnerability by sending a specially crafted HAProxy PROXY protocol v2 header with nested PP2TYPESSL type-length-value TLV records. This can lead to a memory leak, causing the underlying cumulation...

netty-codec-http2: netty-codec-http2: Denial of Service due to resource leak

A flaw was found in netty-codec-http2. A remote attacker could send specially crafted frames that cause a resource leak within the DelegatingDecompressorFrameListener class. This resource leak could lead to an Out Of Memory Error OOME, potentially causing a Denial of Service DoS by taking down th...

io.netty/netty-resolver-dns: Netty has Insufficient Bailiwick Validation for NS Records

A flaw was found in Netty's DnsResolveContext. An attacker controlling an authoritative name server for a subdomain can exploit this vulnerability by providing crafted NS records that are insufficiently validated. This allows the attacker to poison the DNS cache for parent domains, bypassing...

netty-codec-http2: Netty: Denial of Service via uncontrolled HTTP/2 concurrent streams

A flaw was found in Netty, a network application framework. A remote attacker can exploit this vulnerability by sending a large number of HTTP/2 stream requests to a Netty HTTP/2 server. If the server does not explicitly limit concurrent streams, it can lead to the allocation of numerous long-liv...

netty-resolver-dns: Netty: Information disclosure and data manipulation due to improper CNAME record validation

A flaw was found in Netty's DnsResolveContext. This vulnerability allows a remote attacker to achieve information disclosure or data manipulation by crafting malicious DNS responses. The flaw occurs because the DnsResolveContext fails to validate the origin bailiwick of CNAME records in DNS...

netty-resolver-dns: Netty DNS resolver: DNS Cache Poisoning via predictable transaction IDs

A flaw was found in Netty's DNS resolver component. This vulnerability arises from the use of a predictable pseudo-random number generator PRNG for DNS transaction IDs and a static User Datagram Protocol UDP source port. This combination significantly reduces the randomness of DNS queries, making...

netty-handler: Netty: Denial of Service due to eager buffer allocation in TLS handshake

A flaw was found in Netty, a network application framework. A remote attacker can exploit this vulnerability by sending a crafted TLS Transport Layer Security ClientHello message. This can lead to an eager allocation of a large memory buffer, causing a Denial of Service DoS due to excessive memor...

netty-codec-haproxy: Netty-codec-haproxy: Denial of Service via malformed HAProxy message

A flaw was found in netty-codec-haproxy, a component of the Netty network application framework. A remote attacker can exploit this vulnerability by sending a specially crafted HAProxy message with a malformed PP2TYPESSL TLV Type-Length-Value header. This can lead to an IndexOutOfBoundsException...

netty-handler: netty-handler: IPv6 subnet rule bypass due to incorrect masking operation

A flaw was found in netty-handler, a component of the Netty network application framework. A remote attacker can exploit an incorrect masking operation in the IpSubnetFilterRule.compareTo function to bypass configured IPv6 subnet rules. This allows valid public IP addresses to circumvent intended...

ROOT-APP-MAVEN-CVE-2023-34054 CVE-2023-34054 in io.root.io.projectreactor.netty:reactor-netty-core - Patched by Root

Root has patched CVE-2023-34054 in the io.root.io.projectreactor.netty:reactor-netty-core package for Root:Maven. Multiple fixed versions available...

Denial Of Service (DoS)

Netty is vulnerable to Denial of Service DoS. The vulnerability is due to improper management of blocked streams in the HTTP/3 codec, which allows an attacker to create an unlimited number of blocked streams and exhaust memory, leading to an out-of-memory condition and service disruption...

Improper Certificate Validation

Netty is vulnerable to Improper Certificate Validation. The vulnerability is due to improper wrapping of user-supplied X509TrustManager instances that bypasses hostname verification during TLS certificate validation, which allows an attacker to perform man-in-the-middle attacks using certificates...

Denial Of Service (DoS)

Netty is vulnerable to Denial of Service DoS. The vulnerability is due to RedisArrayAggregator pre-allocating an ArrayList based on an untrusted RESP array element count from the network, which allows an attacker to trigger excessive memory allocation and exhaust system resources by sending a...

HTTP Request Smuggling

Netty is vulnerable to HTTP Request Smuggling. The vulnerability is due to HttpObjectDecoder improperly ignoring non-CRLF control characters before the request line, which allows an attacker to create request-boundary confusion between front-end and back-end components and potentially smuggle...

Security Bulletin: DataStage on Cloud Pak for Data has several vulnerabilities due to open source software

Summary Open source packages are used as part of the overall processing in DataStage on Cloud Pak for Data. Vulnerability Details CVEID:CVE-2025-67735 DESCRIPTION: Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.129.Final and 4.2.8.Final, the...

Security Bulletin: Security Vulnerabilities affect IBM Voice Gateway

Summary Security Vulnerabilities affect IBM Voice Gateway. The vulnerabilities have been addressed. Vulnerability Details CVEID:CVE-2026-42579 DESCRIPTION: Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty's DNS codec does not...