Samba: type confusion in mdssvc rpc service for spotlight

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Summary

CVECVE-2023-34967
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-07-20 15:15:11 UTC
Updated2026-11-06 21:17:00 UTC
DescriptionA Type Confusion vulnerability was found in Samba's mdssvc RPC service for Spotlight. When parsing Spotlight mdssvc RPC packets, one encoded data structure is a key-value style dictionary where the keys are character strings, and the values can be any of the supported types in the mdssvc protocol. Due to a lack of type checking in callers of the dalloc_value_for_key() function, which returns the object associated with a key, a caller may trigger a crash in talloc_get_size() when talloc detects that the passed-in pointer is not a valid talloc pointer. With an RPC worker process shared among multiple client connections, a malicious client or attacker can trigger a process crash in a shared RPC mdssvc worker process, affecting all other clients this worker serves.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Problem Types: CWE-843 | CWE-843 Access of Resource Using Incompatible Type

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
3.1[email protected]Secondary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
3.1CNACVSS5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Samba Samba All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Red Hat Red Hat Enterprise Linux 8 unaffected 0:4.18.6-1.el8 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8 unaffected 0:4.18.6-1.el8 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support unaffected 0:4.15.5-15.el8_6 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 8.8 Extended Update Support unaffected 0:4.17.5-5.el8_8 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9 unaffected 0:4.18.6-100.el9 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 9 unaffected 0:4.18.6-100.el9 * rpm Not specified
CNA Red Hat Red Hat Virtualization 4 For Red Hat Enterprise Linux 8 unaffected 0:4.15.5-15.el8_6 * rpm Not specified
CNA Red Hat Red Hat Enterprise Linux 6 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 6 Not specified Not specified
CNA Red Hat Red Hat Enterprise Linux 7 Not specified Not specified
CNA Red Hat Red Hat Storage 3 Not specified Not specified

References

ReferenceSourceLinkTags
cve-details af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
Red Hat af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
July 2023 Samba Vulnerabilities in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com
Red Hat af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
[SECURITY] Fedora 37 Update: samba-4.17.10-0.fc37 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
[SECURITY] Fedora 38 Update: samba-4.18.5-0.fc38 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
Debian -- Security Information -- DSA-5477-1 samba af854a3a-2127-422b-91ae-364da2661108 www.debian.org
Red Hat af854a3a-2127-422b-91ae-364da2661108 access.redhat.com
Red Hat af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
Samba - Security Announcement Archive af854a3a-2127-422b-91ae-364da2661108 www.samba.org Vendor Advisory
2222794 – (CVE-2023-34967) CVE-2023-34967 samba: type confusion in mdssvc RPC service for spotlight af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

SourceTimeEvent
CNA2023-07-13T00:00:00.000ZReported to Red Hat.
CNA2023-07-19T00:00:00.000ZMade public.

Workarounds

CNA: As a possible workaround, disable Spotlight by removing all configuration stanzas ("spotlight=yes|true") that enable Spotlight .

Legacy QID Mappings

  • 161079 Oracle Enterprise Linux Security Update for samba (ELSA-2023-6667)
  • 161138 Oracle Enterprise Linux Security Update for samba (ELSA-2023-7139)
  • 199593 Ubuntu Security Notification for Samba Vulnerabilities (USN-6238-1)
  • 242329 Red Hat Update for samba security (RHSA-2023:6667)
  • 242428 Red Hat Update for samba security (RHSA-2023:7139)
  • 242787 Red Hat Update for samba (RHSA-2024:0580)
  • 242852 Red Hat Update for samba (RHSA-2024:0423)
  • 284336 Fedora Security Update for samba (FEDORA-2023-76c06c8576)
  • 284369 Fedora Security Update for samba (FEDORA-2023-bcd91bfcd3)
  • 355878 Amazon Linux Security Advisory for samba : ALAS2023-2023-316
  • 379622 Alibaba Cloud Linux Security Update for evolution-mapi (ALINUX3-SA-2024:0037)
  • 6000221 Debian Security Update for samba (DSA 5477-1)
  • 6000543 Debian Security Update for samba (DSA 5647-1)
  • 673521 EulerOS Security Update for samba (EulerOS-SA-2023-2907)
  • 673550 EulerOS Security Update for samba (EulerOS-SA-2023-3157)
  • 673584 EulerOS Security Update for samba (EulerOS-SA-2024-1163)
  • 673600 EulerOS Security Update for samba (EulerOS-SA-2023-2869)
  • 673784 EulerOS Security Update for samba (EulerOS-SA-2023-3229)
  • 673831 EulerOS Security Update for samba (EulerOS-SA-2023-2852)
  • 673954 EulerOS Security Update for samba (EulerOS-SA-2023-2888)
  • 674025 EulerOS Security Update for samba (EulerOS-SA-2023-3194)
  • 691226 Free Berkeley Software Distribution (FreeBSD) Security Update for samba (441e1e1a-27a5-11ee-a156-080027f5fec9)
  • 710873 Gentoo Linux Samba Multiple Vulnerabilities (GLSA 202402-28)
  • 754194 SUSE Enterprise Linux Security Update for samba (SUSE-SU-2023:2888-1)
  • 754225 SUSE Enterprise Linux Security Update for samba (SUSE-SU-2023:3060-1)
  • 755893 SUSE Enterprise Linux Security Update for samba (SUSE-SU-2023:2929-1)
  • 755894 SUSE Enterprise Linux Security Update for samba (SUSE-SU-2023:2930-1)
  • 941384 AlmaLinux Security Update for samba (ALSA-2023:6667)
  • 941423 AlmaLinux Security Update for samba (ALSA-2023:7139)

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