140 lines
5.9 KiB
JSON
140 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-2026-103010",
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"assignerOrgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
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"state": "PUBLISHED",
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"assignerShortName": "GitLab",
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"dateReserved": "2026-09-29T21:04:45.349Z",
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"datePublished": "2026-10-08T10:53:10.627Z",
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"dateUpdated": "2026-10-08T14:22:28.966Z"
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},
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"containers": {
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"cna": {
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"title": "Heap-based Buffer Overflow in hMailServer",
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"descriptions": [
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{
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"lang": "en",
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"value": "Heap-based buffer overflow in the legacy Blowfish decryption routine (BlowFishEncryptor::DecryptFromString) in Progressive Robot hMailServer 6.0.0 through 6.3.3 on Windows allows a local interactive user with no hMailServer credentials to write bytes of their choosing past the end of a 255-byte heap buffer in the hMailServer service process, which runs as LocalSystem by default. The user does this by passing a long hexadecimal string to the COM method Utilities.BlowfishDecrypt, which checked no authentication. The routine converted hexadecimal input of any length into a fixed 255-byte buffer before decrypting it in place. The result is a denial of service (service crash), and possibly code execution with the privileges of the service account."
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}
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],
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"affected": [
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{
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"vendor": "Progressive Robot Ltd",
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"product": "hMailServer",
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"repo": "https://gitlab.com/hmailserver/hmailserver",
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"versions": [
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{
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"version": "6.0.0",
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"status": "affected",
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"lessThan": "6.3.4",
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"versionType": "semver"
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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-122: Heap-based Buffer Overflow",
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"cweId": "CWE-122",
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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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"references": [
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{
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"url": "https://gitlab.com/hmailserver/hmailserver/-/commit/135a1908ff820ed587d5f180f98c53bd010d8931"
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},
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{
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"url": "https://gitlab.com/hmailserver/hmailserver/-/releases/v6.3.4"
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},
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{
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"url": "https://gitlab.com/hmailserver/hmailserver/-/work_items/49"
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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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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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],
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"attackVector": "LOCAL",
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"attackComplexity": "LOW",
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"privilegesRequired": "LOW",
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"userInteraction": "NONE",
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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": 7.8,
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"baseSeverity": "HIGH"
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}
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}
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],
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"solutions": [
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{
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"lang": "en",
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"value": "Upgrade to hMailServer 6.3.6, which also requires authentication for the COM Utilities helpers (6.3.4 is the first release with this routine fixed)."
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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": "Found in the hMailServer project's own code review (Progressive Robot Ltd)",
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"type": "finder"
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}
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],
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"providerMetadata": {
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"orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
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"shortName": "GitLab",
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"dateUpdated": "2026-10-08T10:53:10.627Z"
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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": "2026-10-08T14:22:18.436893Z",
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"id": "CVE-2026-103010",
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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": "total"
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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": "2026-10-08T14:22:28.966Z"
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}
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}
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]
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}
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} |