Headline
CVE-2023-42464: CVE-2023-42464 · Issue #486 · Netatalk/netatalk
A Type Confusion vulnerability was found in the Spotlight RPC functions in afpd in Netatalk 3.1.x before 3.1.17. When parsing Spotlight 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 underlying 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 malicious actor may be able to fully control the value of the pointer and theoretically achieve Remote Code Execution on the host. This issue is similar to CVE-2023-34967.
A Type Confusion vulnerability was found in the Spotlight RPC functions in Netatalk’s afpd daemon. When parsing Spotlight 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 underlying 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 malicious actor may be able to fully control the value of the pointer and theoretically achieve Remote Code Execution on the host.
The underlying code for Spotlight queries in Netatalk shares a common heritage with Samba, and hence the root cause and fix are logically identical with those described in CVE-2023-34967.
All versions of Netatalk from 3.1.0 through 3.1.16 are potentially vulnerable to this exploit.
The vulnerability is patched as of Netatalk 3.1.17.
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Gentoo Linux Security Advisory 202402-28 - Multiple vulnerabilities have been discovered in Samba, the worst of which can lead to remote code execution. Versions greater than or equal to 4.18.9 are affected.
Ubuntu Security Notice 6552-1 - Florent Saudel and Arnaud Gatignol discovered that Netatalk incorrectly handled certain specially crafted Spotlight requests. A remote attacker could possibly use this issue to cause heap corruption and execute arbitrary code.
Red Hat Security Advisory 2023-7139-01 - An update for samba, evolution-mapi, and openchangeis now available for Red Hat Enterprise Linux 8. Issues addressed include out of bounds read and path disclosure vulnerabilities.
Debian Linux Security Advisory 5503-1 - Multiple security issues were discovered in Netatalk, an implementation of the Apple Filing Protocol (AFP) for offering file service (mainly) to macOS clients, which may result in the execution of arbitrary code or information disclosure.
Debian Linux Security Advisory 5477-1 - Several vulnerabilities have been discovered in Samba, which could result in information disclosure, denial of service or insufficient enforcement of security-relevant config directives.
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.