medium
5.3
CWE
843
Advisory Published
CVE Published
CVE Published
Updated

CVE-2023-34967: Samba: type confusion in mdssvc rpc service for spotlight

First published: Thu Jul 13 2023(Updated: )

A 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.

Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
ubuntu/samba<2:4.15.13+dfsg-0ubuntu0.20.04.3
2:4.15.13+dfsg-0ubuntu0.20.04.3
ubuntu/samba<2:4.15.13+dfsg-0ubuntu1.2
2:4.15.13+dfsg-0ubuntu1.2
ubuntu/samba<2:4.16.8+dfsg-0ubuntu1.2
2:4.16.8+dfsg-0ubuntu1.2
ubuntu/samba<2:4.17.7+dfsg-1ubuntu1.1
2:4.17.7+dfsg-1ubuntu1.1
ubuntu/samba<2:4.18.5+dfsg-1ubuntu1
2:4.18.5+dfsg-1ubuntu1
debian/samba<=2:4.9.5+dfsg-5+deb10u3<=2:4.9.5+dfsg-5+deb10u4<=2:4.13.13+dfsg-1~deb11u5
2:4.17.12+dfsg-0+deb12u1
2:4.19.3+dfsg-2
redhat/samba<4.16.11
4.16.11
redhat/samba<4.17.10
4.17.10
redhat/samba<4.18.5
4.18.5
Samba Samba<4.16.11
Samba Samba>=4.17.0<4.17.10
Samba Samba>=4.18.0<4.18.5
Fedoraproject Fedora=38
Red Hat Enterprise Linux=8.0
Red Hat Enterprise Linux=9.0
Fedoraproject Fedora=37
Debian Debian Linux=11.0
Debian Debian Linux=12.0

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2023-34967?

    CVE-2023-34967 is a Type Confusion vulnerability found in Samba's mdssvc RPC service for Spotlight.

  • How severe is CVE-2023-34967?

    CVE-2023-34967 has a severity rating of 5.3 (medium).

  • What software is affected by CVE-2023-34967?

    The software affected by CVE-2023-34967 includes Samba versions 2:4.15.13+dfsg-0ubuntu0.20.04.3, 2:4.15.13+dfsg-0ubuntu1.2, 2:4.16.8+dfsg-0ubuntu1.2, 2:4.17.7+dfsg-1ubuntu1.1, 4.16.11, 4.17.10, 4.18.5, and possibly others.

  • How can I fix CVE-2023-34967?

    To fix CVE-2023-34967, it is recommended to update to the patched versions of Samba, such as 2:4.17.10+dfsg-0+deb12u1 or 2:4.19.0+dfsg-1.

  • Where can I find more information about CVE-2023-34967?

    For more information about CVE-2023-34967, you can visit the following references: [Red Hat](https://access.redhat.com/security/cve/CVE-2023-34967), [Samba](https://www.samba.org/samba/security/CVE-2023-34967.html), [Bugzilla](https://bugzilla.redhat.com/show_bug.cgi?id=2222794).

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