Уязвимость компонента Active Directory LDAP-сервера программ сетевого взаимодействия Samba, позволяющая нарушителю получить несанкционированный доступ к конфиденциальным данным

Уязвимость компонента Active Directory Domain Services операционной системы Windows связана с небезопасным управлением привилегиями. Эксплуатация уязвимости может позволить нарушителю, действующему удалённо, повысить свои привилегии

Уязвимость сетевой файловой системы Samba, связанная с неверным определением ссылки перед доступом к файл, позволяющая нарушителю получить доступ к конфиденциальной информации

Уязвимость сетевой файловой системы Samba, связанная с ошибками при проведении процедуры аутентификации, позволяющая нарушителю изменить пароль произвольного пользователя и получить полный доступ к учетной записи

Уязвимость модуля ведения журнала аудита базы данных ActiveDirectory/DC пакета программ сетевого взаимодействия Samba, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость функции memcpy() пакета программ сетевого взаимодействия Samba, позволяющая нарушителю оказать влияние на конфиденциальность защищаемой информации или вызвать отказ в обслуживании

Уязвимость реализации протокола SMB1 пакета программ сетевого взаимодействия Samba, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость службы KDC kpasswd пакета программ сетевого взаимодействия Samba, позволяющая нарушителю повысить привилегии в системе

Уязвимость функций unwrap_des() и unwrap_des3() библиотеки GSSAPI пакета Heimdal программы сетевого взаимодействия Samba

Уязвимость реализации протокола Kerberos операционных систем Windows, позволяющая нарушителю повысить свои привилегии

Уязвимость реализации протокола Kerberos операционных систем Windows, позволяющая нарушителю повысить свои привилегии

Уязвимость реализации протокола Netlogon Remote Protocol (MS-NRPC) операционных систем Windows, позволяющая нарушителю повысить свои привилегии

Уязвимость параметров PAC (Privileged Attribute Certificate) функции krb5_parse_pac пакетов Heimdal и MIT Kerberos программы сетевого взаимодействия Samba, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость реализации протокола Heimdal Kerberos пакета программ сетевого взаимодействия Samba, позволяющая нарушителю выполнить произвольный код

Уязвимость пакета программ сетевого взаимодействия Samba, связанная с отсутствием защиты служебных данных, позволяющая нарушителю раскрыть защищаемую информацию

Уязвимость утилиты samba-tool пакета программ сетевого взаимодействия Samba, позволяющая нарушителю получить несанкционированный доступ к устройству

Уязвимость пакета программ сетевого взаимодействия Samba, связанная с отсутствием защиты служебных данных, позволяющая нарушителю раскрыть защищаемую информацию

Уязвимость компонента winbindd_pam_auth_crap.c пакета программ сетевого взаимодействия Samba, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость функции sl_unpack_loop() службы mdssvc RPC пакета программ сетевого взаимодействия Samba, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость RPC-сервера пакета программ сетевого взаимодействия Samba, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость функции dcesrv_echo_TestSleep() RPC-сервера rpcecho пакета программ сетевого взаимодействия Samba, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость модуля VFS пакета программ сетевого взаимодействия Samba, позволяющая нарушителю получить доступ на чтение, изменение или удаление файлов

Уязвимость механизма синхронизации катологов DirSync пакета программ сетевого взаимодействия Samba, позволяющая нарушителю получить несанкционированный доступ к защищаемой информации и повысить свои привилегии

Уязвимость библиотеки smbd пакета программ сетевого взаимодействия Samba, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость функции dalloc_value_for_key() пакета программ сетевого взаимодействия Samba, позволяющая нарушителю вызвать отказ в обслуживании

Уязвимость пакета программ сетевого взаимодействия Samba, связанная с раскрытием информации, позволяющая нарушителю получить доступ к конфиденциальным данным

Уязвимость пакета программ сетевого взаимодействия Samba, связанная с ошибками синхронизации при использовании общего ресурса, позволяющая нарушителю получить доступ к конфиденциальным данным и нарушить их целостность

The Samba Active Directory LDAP server was vulnerable to an information disclosure flaw because of missing access control checks. An authenticated attacker could use this flaw to extract confidential attribute values using LDAP search expressions. Samba versions before 4.6.16, 4.7.9 and 4.8.4 are vulnerable.

A flaw was found in samba. A race condition in the password lockout code may lead to the risk of brute force attacks being successful if special conditions are met.

A flaw was found in the way Samba handled file/directory metadata. This flaw allows an authenticated attacker with permissions to read or modify share metadata, to perform this operation outside of the share.

Active Directory Domain Services Elevation of Privilege Vulnerability

All versions of Samba prior to 4.15.5 are vulnerable to a malicious client using a server symlink to determine if a file or directory exists in an area of the server file system not exported under the share definition. SMB1 with unix extensions has to be enabled in order for this attack to succeed.

A flaw was found in Samba. The security vulnerability occurs when KDC and the kpasswd service share a single account and set of keys, allowing them to decrypt each other's tickets. A user who has been requested to change their password, can exploit this flaw to obtain and use tickets to other services.

An out-of-bounds read vulnerability was found in Samba due to insufficient length checks in winbindd_pam_auth_crap.c. When performing NTLM authentication, the client replies to cryptographic challenges back to the server. These replies have variable lengths, and Winbind fails to check the lan manager response length. When Winbind is used for NTLM authentication, a maliciously crafted request can trigger an out-of-bounds read in Winbind, possibly resulting in a crash.

A flaw was found in Samba. Some SMB1 write requests were not correctly range-checked to ensure the client had sent enough data to fulfill the write, allowing server memory contents to be written into the file (or printer) instead of client-supplied data. The client cannot control the area of the server memory written to the file (or printer).

A flaw was found in Samba. The KDC accepts kpasswd requests encrypted with any key known to it. By encrypting forged kpasswd requests with its own key, a user can change other users' passwords, enabling full domain takeover.

A flaw was found in Samba. Samba AD users can cause the server to access uninitialized data with an LDAP add or modify the request, usually resulting in a segmentation fault.

A flaw was found in the Samba AD LDAP server. The AD DC database audit logging module can access LDAP message values freed by a preceding database module, resulting in a use-after-free issue. This issue is only possible when modifying certain privileged attributes, such as userAccountControl.

A heap-based buffer overflow vulnerability was found in Samba within the GSSAPI unwrap_des() and unwrap_des3() routines of Heimdal. The DES and Triple-DES decryption routines in the Heimdal GSSAPI library allow a length-limited write buffer overflow on malloc() allocated memory when presented with a maliciously small packet. This flaw allows a remote user to send specially crafted malicious data to the application, possibly resulting in a denial of service (DoS) attack.

Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability

Windows Kerberos Elevation of Privilege Vulnerability

Netlogon RPC Elevation of Privilege Vulnerability

PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that may lead to remote code execution (in KDC, kadmind, or a GSS or Kerberos application server) on 32-bit platforms (which have a resultant heap-based buffer overflow), and cause a denial of service on other platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has "a similar bug."

Since the Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability was disclosed by Microsoft on Nov 8 2022 and per RFC8429 it is assumed that rc4-hmac is weak, Vulnerable Samba Active Directory DCs will issue rc4-hmac encrypted tickets despite the target server supporting better encryption (eg aes256-cts-hmac-sha1-96).

The fix in 4.6.16, 4.7.9, 4.8.4 and 4.9.7 for CVE-2018-10919 Confidential attribute disclosure vi LDAP filters was insufficient and an attacker may be able to obtain confidential BitLocker recovery keys from a Samba AD DC.

The Samba AD DC administration tool, when operating against a remote LDAP server, will by default send new or reset passwords over a signed-only connection.

An infinite loop vulnerability was found in Samba's mdssvc RPC service for Spotlight. When parsing Spotlight mdssvc RPC packets sent by the client, the core unmarshalling function sl_unpack_loop() did not validate a field in the network packet that contains the count of elements in an array-like structure. By passing 0 as the count value, the attacked function will run in an endless loop consuming 100% CPU. This flaw allows an attacker to issue a malformed RPC request, triggering an infinite loop, resulting in a denial of service condition.

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.

A path disclosure vulnerability was found in Samba. As part of the Spotlight protocol, Samba discloses the server-side absolute path of shares, files, and directories in the results for search queries. This flaw allows a malicious client or an attacker with a targeted RPC request to view the information that is part of the disclosed path.

A path traversal vulnerability was identified in Samba when processing client pipe names connecting to Unix domain sockets within a private directory. Samba typically uses this mechanism to connect SMB clients to remote procedure call (RPC) services like SAMR LSA or SPOOLSS, which Samba initiates on demand. However, due to inadequate sanitization of incoming client pipe names, allowing a client to send a pipe name containing Unix directory traversal characters (../). This could result in SMB clients connecting as root to Unix domain sockets outside the private directory. If an attacker or client managed to send a pipe name resolving to an external service using an existing Unix domain socket, it could potentially lead to unauthorized access to the service and consequential adverse events, including compromise or service crashes.

A vulnerability was discovered in Samba, where the flaw allows SMB clients to truncate files, even with read-only permissions when the Samba VFS module "acl_xattr" is configured with "acl_xattr:ignore system acls = yes". The SMB protocol allows opening files when the client requests read-only access but then implicitly truncates the opened file to 0 bytes if the client specifies a separate OVERWRITE create disposition request. The issue arises in configurations that bypass kernel file system permissions checks, relying solely on Samba's permissions.

A design flaw was found in Samba's DirSync control implementation, which exposes passwords and secrets in Active Directory to privileged users and Read-Only Domain Controllers (RODCs). This flaw allows RODCs and users possessing the GET_CHANGES right to access all attributes, including sensitive secrets and passwords. Even in a default setup, RODC DC accounts, which should only replicate some passwords, can gain access to all domain secrets, including the vital krbtgt, effectively eliminating the RODC / DC distinction. Furthermore, the vulnerability fails to account for error conditions (fail open), like out-of-memory situations, potentially granting access to secret attributes, even under low-privileged attacker influence.

A vulnerability was found in Samba's "rpcecho" development server, a non-Windows RPC server used to test Samba's DCE/RPC stack elements. This vulnerability stems from an RPC function that can be blocked indefinitely. The issue arises because the "rpcecho" service operates with only one worker in the main RPC task, allowing calls to the "rpcecho" server to be blocked for a specified time, causing service disruptions. This disruption is triggered by a "sleep()" call in the "dcesrv_echo_TestSleep()" function under specific conditions. Authenticated users or attackers can exploit this vulnerability to make calls to the "rpcecho" server, requesting it to block for a specified duration, effectively disrupting most services and leading to a complete denial of service on the AD DC. The DoS affects all other services as "rpcecho" runs in the main RPC task.

A flaw was found in Samba. It is susceptible to a vulnerability where multiple incompatible RPC listeners can be initiated, causing disruptions in the AD DC service. When Samba's RPC server experiences a high load or unresponsiveness, servers intended for non-AD DC purposes (for example, NT4-emulation "classic DCs") can erroneously start and compete for the same unix domain sockets. This issue leads to partial query responses from the AD DC, causing issues such as "The procedure number is out of range" when using tools like Active Directory Users. This flaw allows an attacker to disrupt AD DC services.

Missing dependency for include

Нет совместимости с installer-feature-samba-usershares

Secure channel faulty since Windows 10/11 update 07/2023