155 lines
5.9 KiB
JSON
155 lines
5.9 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-2026-56855",
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"assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
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"state": "PUBLISHED",
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"assignerShortName": "Go",
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"dateReserved": "2026-06-23T15:10:49.353Z",
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"datePublished": "2026-09-02T19:37:05.807Z",
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"dateUpdated": "2026-09-03T14:14:40.169Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
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"shortName": "Go",
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"dateUpdated": "2026-09-02T19:37:05.807Z"
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},
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"title": "Prevent DoS on deadlocked established channel in golang.org/x/crypto/ssh",
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"descriptions": [
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{
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"lang": "en",
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"value": "Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection. Now, we handle all RFC 4254 channel messages; global requests are handled explicitly. Then, treat all other messages as a protocol error and tear the connection down instead of buffering and blocking."
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}
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],
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"affected": [
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{
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"vendor": "golang.org/x/crypto",
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"product": "golang.org/x/crypto/ssh",
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"collectionURL": "https://pkg.go.dev",
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"packageName": "golang.org/x/crypto/ssh",
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"versions": [
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{
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"version": "0",
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"lessThan": "0.56.0",
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"status": "affected",
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"versionType": "semver"
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}
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],
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"programRoutines": [
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{
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"name": "channel.handlePacket"
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},
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{
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"name": "Dial"
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},
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{
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"name": "NewClientConn"
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},
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{
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"name": "NewControlClientConn"
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},
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{
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"name": "NewServerConn"
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}
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],
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"defaultStatus": "unaffected"
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"description": "CWE-770: Allocation of Resources Without Limits or Throttling"
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}
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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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"url": "https://go.dev/issue/81317"
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},
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{
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"url": "https://go.dev/cl/826524"
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},
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{
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"url": "https://groups.google.com/g/golang-announce/c/1y3fb2np35U"
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},
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{
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"url": "https://pkg.go.dev/vuln/GO-2026-6355"
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}
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],
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"credits": [
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{
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"lang": "en",
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"value": "Will Mortensen"
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}
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]
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},
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"adp": [
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{
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"problemTypes": [
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{
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"descriptions": [
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{
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"type": "CWE",
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"cweId": "CWE-770",
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"lang": "en",
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"description": "CWE-770 Allocation of Resources Without Limits or Throttling"
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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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"cvssV3_1": {
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"scope": "UNCHANGED",
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"version": "3.1",
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"baseScore": 7.5,
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"attackVector": "NETWORK",
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"baseSeverity": "HIGH",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"integrityImpact": "NONE",
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"userInteraction": "NONE",
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"attackComplexity": "LOW",
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"availabilityImpact": "HIGH",
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"privilegesRequired": "NONE",
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"confidentialityImpact": "NONE"
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}
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},
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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": "2026-09-03T14:13:54.397574Z",
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"id": "CVE-2026-56855",
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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": "2026-09-03T14:14:40.169Z"
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}
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}
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]
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}
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} |