153 lines
6.7 KiB
JSON
153 lines
6.7 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-55851",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-06-17T16:44:40.995Z",
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"datePublished": "2026-07-21T21:22:34.879Z",
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"dateUpdated": "2026-07-23T14:04:47.858Z"
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},
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"containers": {
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"cna": {
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"title": "Netty codec-haproxy: Signed-Byte Sentinel Collision in HAProxyMessageDecoder Leads to Unbounded Memory Exhaustion",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-400",
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"lang": "en",
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"description": "CWE-400: Uncontrolled Resource Consumption",
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"type": "CWE"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV4_0": {
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE",
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"vulnAvailabilityImpact": "HIGH",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"subAvailabilityImpact": "NONE",
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"baseScore": 8.7,
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
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"version": "4.0"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/netty/netty/security/advisories/GHSA-q6cq-mhr2-jmr5",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/netty/netty/security/advisories/GHSA-q6cq-mhr2-jmr5"
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},
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{
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"name": "https://github.com/netty/netty/commit/5b68c61f37aa4a3045cba624cbea239655c9003b",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/netty/netty/commit/5b68c61f37aa4a3045cba624cbea239655c9003b"
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},
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{
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"name": "https://github.com/netty/netty/commit/bb2ff68a1fb71cb4b0eb9a9e17b66c52aff680c6",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/netty/netty/commit/bb2ff68a1fb71cb4b0eb9a9e17b66c52aff680c6"
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},
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{
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"name": "https://github.com/netty/netty/releases/tag/netty-4.1.136.Final",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/netty/netty/releases/tag/netty-4.1.136.Final"
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},
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{
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"name": "https://github.com/netty/netty/releases/tag/netty-4.2.16.Final",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/netty/netty/releases/tag/netty-4.2.16.Final"
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}
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],
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"affected": [
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{
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"vendor": "netty",
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"product": "netty",
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"versions": [
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{
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"version": ">= 4.2.0.Final, < 4.2.16.Final",
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"status": "affected"
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},
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{
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"version": ">= 4.1.0.Final, < 4.1.136.Final",
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"status": "affected"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-07-21T21:22:34.879Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final up to (but not including) 4.2.16.Final, and 4.1.0.Final up to (but not including) 4.1.135, the `HAProxyMessageDecoder` in Netty's `codec-haproxy` module performs protocol version detection by reading the 13th byte as a signed Java `byte` and widening it to `int` without masking; a PROXY protocol v2 binary prefix followed by version byte `0xFF` sign-extends to `-1`, collides with the decoder's need-more-data sentinel, and causes `ByteToMessageDecoder` to accumulate inbound bytes in an unbounded `cumulation` buffer until direct memory is exhausted. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final."
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}
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],
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"source": {
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"advisory": "GHSA-q6cq-mhr2-jmr5",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-07-23T14:04:36.269979Z",
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"id": "CVE-2026-55851",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-07-23T14:04:47.858Z"
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}
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}
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]
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}
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} |