153 lines
6.2 KiB
JSON
153 lines
6.2 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-2026-129122",
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"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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"state": "PUBLISHED",
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"assignerShortName": "VulnCheck",
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"dateReserved": "2026-11-13T16:01:00.441Z",
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"datePublished": "2026-11-13T16:23:44.625Z",
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"dateUpdated": "2026-11-13T16:23:44.625Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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"shortName": "VulnCheck",
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"dateUpdated": "2026-11-13T16:23:44.625Z"
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},
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"datePublic": "2026-10-31T00:00:00.000Z",
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"title": "C-Kermit 6.0.192 before 11.1.515 Buffer Overflow via Telnet NEW-ENVIRON Negotiation",
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"descriptions": [
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{
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"lang": "en",
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"value": "C-Kermit 6.0.192 before 11.1.515 contains a buffer overflow vulnerability in tn_snenv() in ckctel.c that allows malicious Telnet servers to corrupt client memory via crafted NEW-ENVIRON SEND subnegotiation. Malicious or machine-in-the-middle servers can send oversized variable names before authentication, overflowing a 16-byte stack buffer and a miscomputed heap buffer to corrupt stack and heap memory."
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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": "Out-of-bounds Write",
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"cweId": "CWE-787",
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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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"affected": [
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{
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"vendor": "OpenKermit",
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"product": "C-Kermit",
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"defaultStatus": "unaffected",
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"versions": [
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{
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"version": "6.0.192",
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"status": "affected",
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"lessThan": "11.1.515",
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"versionType": "semver"
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}
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],
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"packageURL": "pkg:github/OpenKermit/ckermit"
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}
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],
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"metrics": [
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{
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"format": "CVSS",
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"cvssV4_0": {
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"version": "4.0",
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"vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
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"attackVector": "NETWORK",
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"attackComplexity": "HIGH",
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"attackRequirements": "NONE",
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"privilegesRequired": "NONE",
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"userInteraction": "PASSIVE",
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"vulnConfidentialityImpact": "HIGH",
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"vulnIntegrityImpact": "HIGH",
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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": 7.7,
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"baseSeverity": "HIGH"
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}
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},
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{
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"format": "CVSS",
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
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"attackVector": "NETWORK",
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"attackComplexity": "HIGH",
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"privilegesRequired": "NONE",
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"userInteraction": "REQUIRED",
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"scope": "UNCHANGED",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"availabilityImpact": "HIGH",
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"baseScore": 7.5,
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"baseSeverity": "HIGH"
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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://github.com/OpenKermit/ckermit/security/advisories/GHSA-c5px-7h4c-gj8p",
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"tags": [
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"vendor-advisory"
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],
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"name": "GitHub Security Advisory (GHSA-c5px-7h4c-gj8p)"
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},
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{
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"url": "https://github.com/OpenKermit/ckermit/commit/39ab009a365b97632e9975e1266fa618c4bdc59f",
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"tags": [
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"patch"
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]
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},
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{
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"url": "https://github.com/OpenKermit/ckermit/commit/42cf6decb926f56d606a76262791aaf071955d25",
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"tags": [
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"patch"
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]
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},
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{
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"url": "https://github.com/OpenKermit/ckermit/releases/tag/v11.1.515",
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"tags": [
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"release-notes"
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],
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"name": "C-Kermit v11.1.515 Release Notes"
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},
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{
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"url": "https://github.com/OpenKermit/ckermit/blob/v11.0.514/ckctel.c#L5622",
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"tags": [
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"technical-description"
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]
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},
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{
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"name": "VulnCheck Advisory: C-Kermit 6.0.192 before 11.1.515 Buffer Overflow via Telnet NEW-ENVIRON Negotiation",
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"tags": [
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"third-party-advisory"
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],
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"url": "https://www.vulncheck.com/advisories/c-kermit-6.0.192-before-11.1.515-buffer-overflow-via-telnet-new-environ-negotiation"
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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": "John Goerzen",
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"type": "finder"
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},
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{
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"lang": "en",
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"value": "John Goerzen",
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"type": "remediation developer"
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}
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],
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"x_generator": {
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"engine": "vulncheck-endgame"
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}
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}
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}
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} |