All errata/p11/ALT-PU-2026-20562-4
ALT-PU-2026-20562-4

Package update samba in branch p11

Version4.22.11-alt4
Task#420060
Published2026-11-13
Max severityCRITICAL
Severity:

Closed issues (18)

BDU:2026-07316
CRITICAL10.0

Уязвимость функции check password script модуля DCE/RPC SAMR server пакета программ сетевого взаимодействия Samba, позволяющая нарушителю выполнить произвольный код

Published: 2026-05-26Modified: 2026-11-09
CVSS 3.xCRITICAL 10.0
CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS 2.0CRITICAL 10.0
CVSS:2.0/AV:N/AC:L/Au:N/C:C/I:C/A:C
References
BDU:2026-07317
CRITICAL10.0

Уязвимость подсистемы печати (printing subsystem) программ сетевого взаимодействия Samba, позволяющая нарушителю выполнить произвольный код

Published: 2026-05-26Modified: 2026-11-09
CVSS 3.xCRITICAL 10.0
CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS 2.0CRITICAL 10.0
CVSS:2.0/AV:N/AC:L/Au:N/C:C/I:C/A:C
References
BDU:2026-07419
HIGH7.1

Уязвимость механизма NTFS reparse points программного обеспечения Samba, позволяющая нарушителю изменить произвольные файлы

Published: 2026-05-27Modified: 2026-11-09
CVSS 3.xHIGH 7.1
CVSS:3.x/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
CVSS 2.0HIGH 7.5
CVSS:2.0/AV:N/AC:L/Au:S/C:N/I:P/A:C
References
BDU:2026-07421
HIGH7.3

Уязвимость модуля vfs_worm программного обеспечения Samba, позволяющая нарушителю изменить произвольные файлы

Published: 2026-05-27Modified: 2026-11-09
CVSS 3.xHIGH 7.3
CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS 2.0HIGH 7.5
CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:P/A:P
References
BDU:2026-07422
HIGH8.0

Уязвимость компонента управления групповыми политиками (GPO) программного обеспечения Samba, позволяющая нарушителю обойти существующие ограничения безопасности

Published: 2026-05-27Modified: 2026-11-09
CVSS 3.xHIGH 8.0
CVSS:3.x/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
CVSS 2.0MEDIUM 6.2
CVSS:2.0/AV:A/AC:H/Au:N/C:C/I:C/A:N
References
BDU:2026-07423
HIGH7.5

Уязвимость WINS-сервера программного обеспечения Samba, позволяющая нарушителю вызвать отказ в обслуживании

Published: 2026-05-27Modified: 2026-11-09
CVSS 3.xHIGH 7.5
CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0HIGH 7.8
CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:C
References
CVE-2026-1933
MEDIUM6.5

A flaw was found in Samba’s handling of NTFS-style reparse points on shares configured with read only = yes. Due to missing SMB-layer access checks, authenticated users with underlying filesystem write permissions may create or delete reparse point metadata through SMB operations even on read-only exports. This could allow modification of SMB-visible file behavior, including converting files into symbolic links or other reparse point types.

Published: 2026-05-27Modified: 2026-11-04
CVSS 3.xMEDIUM 6.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
References
CVE-2026-2340
MEDIUM6.5

A flaw was found in Samba’s vfs_worm module. The module is intended to provide write-once, read-many (WORM) protections by preventing modification of files after a configurable grace period. Due to insufficient validation during rename operations, an authenticated user with write access to a share could overwrite a protected file by renaming a newly created file over the existing WORM-protected file.

Published: 2026-05-27Modified: 2026-11-06
CVSS 3.xMEDIUM 6.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
References
CVE-2026-3012
MEDIUM6.8

A flaw was found in Samba’s certificate auto-enrollment Group Policy handling. When certificate auto-enrollment is enabled, Samba may retrieve a CA certificate over an unencrypted HTTP connection and install it into the local trust store without proper verification. An attacker with the ability to intercept or redirect network traffic could exploit this behavior to supply a malicious certificate authority certificate, potentially allowing interception or spoofing of trusted communications.

Published: 2026-05-27Modified: 2026-11-04
CVSS 3.xMEDIUM 6.8
CVSS:3.x/CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
References
CVE-2026-3238
HIGH7.5

A flaw was found in Samba’s WINS server component when running as an Active Directory Domain Controller. The WINS protocol handlers for certain request types did not properly validate incoming packets, allowing an unauthenticated remote attacker to trigger a NULL pointer dereference and crash the WINS service using specially crafted UDP packets.

Published: 2026-06-08Modified: 2026-09-01
CVSS 3.xHIGH 7.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
CVE-2026-4408
CRITICAL9.8

A flaw was found in Samba. A remote attacker can exploit a misconfiguration in Samba file servers and classic domain controllers that use the "check password script" feature. If this script is configured with the %u substitution character, the client-controlled username is passed without proper escaping of shell meta-characters. This vulnerability allows an attacker to achieve remote command execution on the affected system. This issue primarily affects non-standard configurations where the "check password script" is used with %u and the samba-dcerpcd service is started as a system service.

Published: 2026-05-28Modified: 2026-11-04
CVSS 3.xCRITICAL 9.8
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
CVE-2026-4480
CRITICAL9.0

A flaw was found in the Samba printing subsystem. Samba passes the client-controlled job description string to the command configured with the "print command" setting via the "%J" substitution character without escaping shell meta characters. A remote attacker could exploit this vulnerability by sending a specially crafted print job description that contains unescaped shell characters. This could lead to remote code execution on the affected system.

Published: 2026-05-26Modified: 2026-11-04
CVSS 3.xCRITICAL 9.0
CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
References
CVE-2026-58216
MEDIUM5.3

An out-of-bounds read flaw was found in Samba's Kerberos Key Distribution Center's (KDC) password change (kpasswd) service. When processing malformed ASN.1-encoded Kerberos password change request, Samba server miscalculates the structure size and attempts to read up to six bytes beyond the end of the allocated buffer. While this out-of-bounds read typically results in a harmless decryption failure, if the read hits unmapped memory, it causes the KDC process to crash. An authenticated attacker can send a specially crafted kpasswd request containing malformed ASN.1 data to trigger the out-of-bounds read, which may cause the KDC process to terminate, resulting in a denial of service.

Published: 2026-07-30Modified: 2026-07-31
CVSS 3.xMEDIUM 5.3
CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
References
CVE-2026-58218
MEDIUM5.3

A flaw was found in Samba's internal DNS server where unauthenticated TKEY registration requests were added to the TKEY name cache before being rejected. A remote, unauthenticated attacker can exploit this behavior by sending a large number of TKEY requests with arbitrary names, exhausting the cache and evicting legitimate TKEY entries. This can prevent legitimate TSIG authentication for signed DNS queries, resulting in a denial of service.

Published: 2026-07-30Modified: 2026-07-30
CVSS 3.xMEDIUM 5.3
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
References
CVE-2026-58222
HIGH8.8

A security flaw combining LDAP filter injection and improper authorization checks was found in Samba Active Directory Domain Controller (AD DC). When processing LDAP Compare requests, Samba fails to properly validate user-supplied attribute names and executes the resulting internal database search in a trusted context, bypassing normal Access Control List (ACL) enforcement. An authenticated low-privilege domain user can exploit these flaws to disclose confidential Active Directory attributes that would normally be inaccessible. The disclosed information may be leveraged to derive sensitive authentication material, potentially leading to privilege escalation and complete domain compromise. For example: In deployments configured with Group Managed Service Accounts (gMSAs), an attacker can extract the "msKds-RootKeyData" attribute and derive gMSA passwords offline, potentially leading to complete domain compromise if privileged gMSAs are present.

Published: 2026-07-30Modified: 2026-07-30
CVSS 3.xHIGH 8.8
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
CVE-2026-58224
MEDIUM6.5

A flaw was found in Samba's CTDB, the clustered database service used by Samba. Insufficient integrity validation of received CTDB protocol packets allows malformed packets containing invalid field lengths, improperly terminated strings, or inconsistent packet sizes to be processed without adequate bounds checking. A remote attacker with access to the CTDB private network may trigger a denial of service through process crashes or excessive memory consumption and, in limited cases, disclose adjacent memory contents.

Published: 2026-08-14Modified: 2026-11-05
CVSS 3.xMEDIUM 6.5
CVSS:3.x/CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References

Closed bugs (2)

Bug #43955

Не удалось найти ресурс при открытии политик на клиенте с Windows с RSAT (Firewalld)

Bug #60003

samba-devel 4.22.11-alt1 добавляет RPATH на стандартный библиотечный путь