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CERTFR-2018-AVI-571
Vulnerability from certfr_avis
De multiples vulnérabilités ont été découvertes dans Samba . Elles permettent à un attaquant de provoquer un déni de service à distance et une atteinte à l'intégrité des données.
Solution
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
NoneImpacted products
References
| Title | Publication Time | Tags | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Samba versions 4.8.x ant\u00e9rieures \u00e0 4.8.7",
"product": {
"name": "N/A",
"vendor": {
"name": "Samba",
"scada": false
}
}
},
{
"description": "Samba versions 4.9.x ant\u00e9rieures \u00e0 4.9.3",
"product": {
"name": "N/A",
"vendor": {
"name": "Samba",
"scada": false
}
}
},
{
"description": "Samba versions 4.x ant\u00e9rieures \u00e0 4.7.12",
"product": {
"name": "N/A",
"vendor": {
"name": "Samba",
"scada": false
}
}
}
],
"affected_systems_content": null,
"content": "## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
"cves": [
{
"name": "CVE-2018-16857",
"url": "https://www.cve.org/CVERecord?id=CVE-2018-16857"
},
{
"name": "CVE-2018-16852",
"url": "https://www.cve.org/CVERecord?id=CVE-2018-16852"
},
{
"name": "CVE-2018-16841",
"url": "https://www.cve.org/CVERecord?id=CVE-2018-16841"
},
{
"name": "CVE-2018-16853",
"url": "https://www.cve.org/CVERecord?id=CVE-2018-16853"
},
{
"name": "CVE-2018-14629",
"url": "https://www.cve.org/CVERecord?id=CVE-2018-14629"
},
{
"name": "CVE-2018-16851",
"url": "https://www.cve.org/CVERecord?id=CVE-2018-16851"
}
],
"initial_release_date": "2018-11-27T00:00:00",
"last_revision_date": "2018-11-27T00:00:00",
"links": [],
"reference": "CERTFR-2018-AVI-571",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2018-11-27T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Samba . Elles\npermettent \u00e0 un attaquant de provoquer un d\u00e9ni de service \u00e0 distance et\nune atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es.\n",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans Samba",
"vendor_advisories": [
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Samba CVE-2018-16841 du 27 novembre 2018",
"url": "https://www.samba.org/samba/security/CVE-2018-16841.html"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Samba CVE-2018-16852 du 27 novembre 2018",
"url": "https://www.samba.org/samba/security/CVE-2018-16852.html"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Samba CVE-2018-16851 du 27 novembre 2018",
"url": "https://www.samba.org/samba/security/CVE-2018-16851.html"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Samba CVE-2018-16857 du 27 novembre 2018",
"url": "https://www.samba.org/samba/security/CVE-2018-16857.html"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Samba CVE-2018-14629 du 27 novembre 2018",
"url": "https://www.samba.org/samba/security/CVE-2018-14629.html"
},
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Samba CVE-2018-16853 du 27 novembre 2018",
"url": "https://www.samba.org/samba/security/CVE-2018-16853.html"
}
]
}
CVE-2018-16857 (GCVE-0-2018-16857)
Vulnerability from cvelistv5
Published
2018-11-28 14:00
Modified
2024-08-05 10:32
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
Samba from version 4.9.0 and before version 4.9.3 that have AD DC configurations watching for bad passwords (to restrict brute forcing of passwords) in a window of more than 3 minutes may not watch for bad passwords at all. The primary risk from this issue is with regards to domains that have been upgraded from Samba 4.8 and earlier. In these cases the manual testing done to confirm an organisation's password policies apply as expected may not have been re-done after the upgrade.
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
{
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}
],
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"integrityImpact": "HIGH",
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CVE-2018-16853 (GCVE-0-2018-16853)
Vulnerability from cvelistv5
Published
2018-11-28 14:00
Modified
2024-08-05 10:32
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the KDC when Samba is built in the non-default MIT Kerberos configuration. With this advisory the Samba Team clarify that the MIT Kerberos build of the Samba AD DC is considered experimental. Therefore the Samba Team will not issue security patches for this configuration. Additionally, Samba 4.7.12, 4.8.7 and 4.9.3 have been issued as security releases to prevent building of the AD DC with MIT Kerberos unless --with-experimental-mit-ad-dc is specified to the configure command.
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
Impacted products
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CVE-2018-14629 (GCVE-0-2018-14629)
Vulnerability from cvelistv5
Published
2018-11-28 14:00
Modified
2024-08-05 09:29
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A denial of service vulnerability was discovered in Samba's LDAP server before versions 4.7.12, 4.8.7, and 4.9.3. A CNAME loop could lead to infinite recursion in the server. An unprivileged local attacker could create such an entry, leading to denial of service.
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
Impacted products
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],
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},
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CVE-2018-16841 (GCVE-0-2018-16841)
Vulnerability from cvelistv5
Published
2018-11-28 14:00
Modified
2024-08-05 10:32
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
Samba from version 4.3.0 and before versions 4.7.12, 4.8.7 and 4.9.3 are vulnerable to a denial of service. When configured to accept smart-card authentication, Samba's KDC will call talloc_free() twice on the same memory if the principal in a validly signed certificate does not match the principal in the AS-REQ. This is only possible after authentication with a trusted certificate. talloc is robust against further corruption from a double-free with talloc_free() and directly calls abort(), terminating the KDC process.
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
Impacted products
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CVE-2018-16851 (GCVE-0-2018-16851)
Vulnerability from cvelistv5
Published
2018-11-28 14:00
Modified
2024-08-05 10:32
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
Samba from version 4.0.0 and before versions 4.7.12, 4.8.7, 4.9.3 is vulnerable to a denial of service. During the processing of an LDAP search before Samba's AD DC returns the LDAP entries to the client, the entries are cached in a single memory object with a maximum size of 256MB. When this size is reached, the Samba process providing the LDAP service will follow the NULL pointer, terminating the process. There is no further vulnerability associated with this issue, merely a denial of service.
References
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
Impacted products
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CVE-2018-16852 (GCVE-0-2018-16852)
Vulnerability from cvelistv5
Published
2018-11-28 14:00
Modified
2024-08-05 10:32
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
Samba from version 4.9.0 and before version 4.9.3 is vulnerable to a NULL pointer de-reference. During the processing of an DNS zone in the DNS management DCE/RPC server, the internal DNS server or the Samba DLZ plugin for BIND9, if the DSPROPERTY_ZONE_MASTER_SERVERS property or DSPROPERTY_ZONE_SCAVENGING_SERVERS property is set, the server will follow a NULL pointer and terminate. There is no further vulnerability associated with this issue, merely a denial of service.
References
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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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