142 lines
6.0 KiB
JSON
142 lines
6.0 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-2026-116774",
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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": "2026-10-26T21:53:35.166Z",
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"datePublished": "2026-10-27T20:25:26.914Z",
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"dateUpdated": "2026-10-28T16:13:18.607Z"
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},
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"containers": {
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"cna": {
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"title": "russh: peer-declared zero maximum packet size permanently stalls channel writes (silent AsyncWrite hang)",
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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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"descriptions": [
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{
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"cweId": "CWE-835",
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"lang": "en",
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"description": "CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')",
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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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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "LOW",
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"baseScore": 4.3,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"privilegesRequired": "LOW",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
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"version": "3.1"
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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/Eugeny/russh/security/advisories/GHSA-fw5c-8223-6h42",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/Eugeny/russh/security/advisories/GHSA-fw5c-8223-6h42"
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},
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{
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"name": "https://github.com/Eugeny/russh/commit/39cb9dbaa37caf555d34c6c22efa3bbbff9e186c",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/Eugeny/russh/commit/39cb9dbaa37caf555d34c6c22efa3bbbff9e186c"
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},
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{
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"name": "https://github.com/Eugeny/russh/releases/tag/v0.65.0",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/Eugeny/russh/releases/tag/v0.65.0"
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}
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],
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"affected": [
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{
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"vendor": "Eugeny",
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"product": "russh",
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"versions": [
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{
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"version": ">= 0.60.0, < 0.65.0",
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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": "2026-10-27T20:25:26.914Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "russh is a Rust SSH client and server library that includes an SSH agent protocol implementation. From 0.60.0 until 0.65.0, channel-open parsing accepts a peer-declared maximum_packet_size of zero and passes it into ChannelTx::poll_writable in russh/src/channels/io/tx.rs. The Channel::data, Channel::make_writer, and Channel::into_stream asynchronous write paths then calculate a writable size of zero and remain pending forever because window adjustments cannot satisfy a static zero packet maximum. An authenticated client can strand server writes, and a malicious server can strand client writes, allowing affected tasks, channels, and connections to accumulate without surfacing an error. This issue is fixed in version 0.65.0."
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}
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],
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"source": {
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"advisory": "GHSA-fw5c-8223-6h42",
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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": "2026-10-28T14:34:53.983359Z",
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"id": "CVE-2026-116774",
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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": "no"
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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": "2026-10-28T16:13:18.607Z"
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}
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}
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]
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}
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} |