samba — security advisory
A design flaw was found in Samba's DirSync control implementation, which exposes passwords and secrets in Active Directory to privileged users and Read-Only Domain Controllers (RODCs). This flaw allows RODCs and users possessing the GET_CHANGES right to access all attributes, including sensitive secrets and passwords. Even in a default setup, RODC DC accounts, which should only replicate some passwords, can gain access to all domain secrets, including the vital krbtgt, effectively eliminating the RODC / DC distinction. Furthermore, the vulnerability fails to account for error conditions (fail open), like out-of-memory situations, potentially granting access to secret attributes, even under low-privileged attacker influence.
- Products
- samba
- Affected versions
- Not specified
- Fixed versions
- 4.18.8-r0
- CVEs
- CVE-2023-4154
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 15:02 UTC · Revision 1
Source evidence
A design flaw was found in Samba's DirSync control implementation, which exposes passwords and secrets in Active Directory to privileged users and Read-Only Domain Controllers (RODCs). This flaw allows RODCs and users possessing the GET_CHANGES right to access all attributes, including sensitive secrets and passwords. Even in a default setup, RODC DC accounts, which should only replicate some passwords, can gain access to all domain secrets, including the vital krbtgt, effectively eliminating the RODC / DC distinction. Furthermore, the vulnerability fails to account for error conditions (fail open), like out-of-memory situations, potentially granting access to secret attributes, even under low-privileged attacker influence.
osv:ALPINE-CVE-2023-4154
samba
Fixed versions: 4.18.8-r0
samba
Fixed versions: 4.18.8-r0
samba
Fixed versions: 4.18.8-r0
samba
Fixed versions: 4.18.8-r0
samba
Fixed versions: 4.18.8-r0
samba
Fixed versions: 4.18.8-r0
samba
Fixed versions: 4.18.8-r0
Complete source record
{
"id": "6ed46e97c341c704e5e575b6ed7849caef6e68d2011c267aea2e5890a38036f8",
"url": "https://osv.dev/vulnerability/ALPINE-CVE-2023-4154",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ALPINE-CVE-2023-4154",
"summary": "A design flaw was found in Samba's DirSync control implementation, which exposes passwords and secrets in Active Directory to privileged users and Read-Only Domain Controllers (RODCs). This flaw allows RODCs and users possessing the GET_CHANGES right to access all attributes, including sensitive secrets and passwords. Even in a default setup, RODC DC accounts, which should only replicate some passwords, can gain access to all domain secrets, including the vital krbtgt, effectively eliminating the RODC / DC distinction. Furthermore, the vulnerability fails to account for error conditions (fail open), like out-of-memory situations, potentially granting access to secret attributes, even under low-privileged attacker influence.",
"evidence": "osv:ALPINE-CVE-2023-4154",
"products": [
{
"name": {
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"evidence": "/affected/0/package/name"
},
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"evidence": "/affected/0/ranges"
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{
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"severity": "medium",
"structured": {
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"aliases": [
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"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
}
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},
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],
"package": {
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"database_specific": {
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{
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],
"modified": "2026-10-26T17:17:58.638696850Z",
"provider": "osv",
"upstream": [
"CVE-2023-4154"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2023-4154"
]
},
"related_cves": [
{
"value": "CVE-2023-4154",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 454489,
"published_at": "2023-11-07T20:15:08.683+00:00"
}