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CERTFR-2026-AVI-0651
Vulnerability from certfr_avis
De multiples vulnérabilités ont été découvertes dans Samba. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service à distance et une atteinte à l'intégrité des données.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
References
| Title | Publication Time | Tags | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Samba versions 4.23.x ant\u00e9rieures \u00e0 4.23.8",
"product": {
"name": "Samba",
"vendor": {
"name": "Samba",
"scada": false
}
}
},
{
"description": "Samba versions 4.24.x ant\u00e9rieures \u00e0 4.24.3",
"product": {
"name": "Samba",
"vendor": {
"name": "Samba",
"scada": false
}
}
},
{
"description": "Samba versions ant\u00e9rieures \u00e0 4.22.10",
"product": {
"name": "Samba",
"vendor": {
"name": "Samba",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2026-1933",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-1933"
},
{
"name": "CVE-2026-2340",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-2340"
},
{
"name": "CVE-2026-3238",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-3238"
},
{
"name": "CVE-2026-3012",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-3012"
},
{
"name": "CVE-2026-4480",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-4480"
},
{
"name": "CVE-2026-4408",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-4408"
}
],
"initial_release_date": "2026-05-27T00:00:00",
"last_revision_date": "2026-05-27T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-0651",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-05-27T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
},
{
"description": "Atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es"
},
{
"description": "Non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur"
},
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Samba. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer une ex\u00e9cution de code arbitraire \u00e0 distance, un d\u00e9ni de service \u00e0 distance et une atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans Samba",
"vendor_advisories": [
{
"published_at": "2026-05-26",
"title": "Bulletin de s\u00e9curit\u00e9 Samba CVE-2026-4480",
"url": "https://www.samba.org/samba/security/CVE-2026-4480.html"
},
{
"published_at": "2026-05-26",
"title": "Bulletin de s\u00e9curit\u00e9 Samba CVE-2026-3238",
"url": "https://www.samba.org/samba/security/CVE-2026-3238.html"
},
{
"published_at": "2026-05-26",
"title": "Bulletin de s\u00e9curit\u00e9 Samba CVE-2026-4408",
"url": "https://www.samba.org/samba/security/CVE-2026-4408.html"
},
{
"published_at": "2026-05-26",
"title": "Bulletin de s\u00e9curit\u00e9 Samba CVE-2026-3012",
"url": "https://www.samba.org/samba/security/CVE-2026-3012.html"
},
{
"published_at": "2026-05-26",
"title": "Bulletin de s\u00e9curit\u00e9 Samba CVE-2026-2340",
"url": "https://www.samba.org/samba/security/CVE-2026-2340.html"
},
{
"published_at": "2026-05-26",
"title": "Bulletin de s\u00e9curit\u00e9 Samba CVE-2026-1933",
"url": "https://www.samba.org/samba/security/CVE-2026-1933.html"
}
]
}
CVE-2026-3238 (GCVE-0-2026-3238)
Vulnerability from cvelistv5
Published
2026-06-08 07:34
Modified
2026-06-08 12:58
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-476 - NULL Pointer Dereference
Summary
A flaw was found in Samba’s WINS server component when running as an Active Directory Domain Controller. The WINS protocol handlers for certain request types did not properly validate incoming packets, allowing an unauthenticated remote attacker to trigger a NULL pointer dereference and crash the WINS service using specially crafted UDP packets.
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
||||||||||||||||||||||||||||||||
|
||||||||||||||||||||||||||||||||||
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CVE-2026-2340 (GCVE-0-2026-2340)
Vulnerability from cvelistv5
Published
2026-05-27 12:09
Modified
2026-06-04 00:08
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-280 - Improper Handling of Insufficient Permissions or Privileges
Summary
A flaw was found in Samba’s vfs_worm module. The module is intended to provide write-once, read-many (WORM) protections by preventing modification of files after a configurable grace period. Due to insufficient validation during rename operations, an authenticated user with write access to a share could overwrite a protected file by renaming a newly created file over the existing WORM-protected file.
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected: 0:4.23.5-109.el10_2 < * cpe:/o:redhat:enterprise_linux:10.2 |
||||||||||||||||||||||||||||||||
|
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CVE-2026-3012 (GCVE-0-2026-3012)
Vulnerability from cvelistv5
Published
2026-05-27 10:02
Modified
2026-06-08 15:11
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-345 - Insufficient Verification of Data Authenticity
Summary
A flaw was found in Samba’s certificate auto-enrollment Group Policy handling. When certificate auto-enrollment is enabled, Samba may retrieve a CA certificate over an unencrypted HTTP connection and install it into the local trust store without proper verification. An attacker with the ability to intercept or redirect network traffic could exploit this behavior to supply a malicious certificate authority certificate, potentially allowing interception or spoofing of trusted communications.
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected: 0:4.23.5-109.el10_2 < * cpe:/o:redhat:enterprise_linux:10.2 |
|||||||||||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||||||||||||
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CVE-2026-4480 (GCVE-0-2026-4480)
Vulnerability from cvelistv5
Published
2026-05-26 13:56
Modified
2026-06-09 08:14
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Summary
A flaw was found in the Samba printing subsystem. Samba passes the client-controlled job description string to the command configured with the "print command" setting via the "%J"
substitution character without escaping shell meta characters. A remote attacker could exploit this vulnerability by sending a specially crafted print job description that contains unescaped shell characters. This could lead to remote code execution on the affected system.
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
Impacted products
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected: 0:4.23.5-109.el10_2 < * cpe:/o:redhat:enterprise_linux:10.2 |
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CVE-2026-4408 (GCVE-0-2026-4408)
Vulnerability from cvelistv5
Published
2026-05-28 07:25
Modified
2026-06-08 15:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Summary
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References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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Impacted products
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected: 0:4.23.5-109.el10_2 < * cpe:/o:redhat:enterprise_linux:10.2 |
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CVE-2026-1933 (GCVE-0-2026-1933)
Vulnerability from cvelistv5
Published
2026-05-27 12:28
Modified
2026-06-03 23:47
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-284 - Improper Access Control
Summary
A flaw was found in Samba’s handling of NTFS-style reparse points on shares configured with read only = yes. Due to missing SMB-layer access checks, authenticated users with underlying filesystem write permissions may create or delete reparse point metadata through SMB operations even on read-only exports. This could allow modification of SMB-visible file behavior, including converting files into symbolic links or other reparse point types.
References
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected: 0:4.23.5-109.el10_2 < * cpe:/o:redhat:enterprise_linux:10.2 |
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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