Описание
Security update for samba
This update for samba fixes the following issues
Security issues:
- CVE-2026-1933: Missing access check on reparse point operations (bsc#1261188).
- CVE-2026-2340: vfs_worm does not block directory modification (bsc#1261158).
- CVE-2026-3012: group policy certificate enrollment uses http: // without validation (bsc#1261159).
- CVE-2026-3238: unauthenticated udp packet crashes AD DC nbt server (bsc#1261160).
- CVE-2026-4408: Remote Code Execution in SAMR (bsc#1261163).
- CVE-2026-4480: Unauthenticated Remote Code Execution (bsc#1261161).
Changes for samba:
- network:samba:STABLE/samba: "use-kerberos=desired" broken / Dolphin requires login for Samba shares (bsc#1255755).
- Samba service start times out (SElinux relabel takes too long) (bsc#1259050).
- samba-ad-dc-libs packages is missing a DLZ plugin for bind 9.20 (bsc#1249058).
- VFS_Snapper does not show previous file versions in subdirectories. (bsc#1259667).
- Updated to 4.22.9
Список пакетов
openSUSE Leap 16.0
Ссылки
- SUSE Security Ratings
- SUSE Bug 1249058
- SUSE Bug 1255755
- SUSE Bug 1257200
- SUSE Bug 1259050
- SUSE Bug 1259667
- SUSE Bug 1261158
- SUSE Bug 1261159
- SUSE Bug 1261160
- SUSE Bug 1261161
- SUSE Bug 1261163
- SUSE Bug 1261188
- SUSE CVE CVE-2026-1933 page
- SUSE CVE CVE-2026-2340 page
- SUSE CVE CVE-2026-3012 page
- SUSE CVE CVE-2026-3238 page
- SUSE CVE CVE-2026-4408 page
- SUSE CVE CVE-2026-4480 page
Описание
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.
Затронутые продукты
Ссылки
- CVE-2026-1933
- SUSE Bug 1261188
Описание
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.
Затронутые продукты
Ссылки
- CVE-2026-2340
- SUSE Bug 1261158
Описание
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.
Затронутые продукты
Ссылки
- CVE-2026-3012
- SUSE Bug 1261159
Описание
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.
Затронутые продукты
Ссылки
- CVE-2026-3238
- SUSE Bug 1261160
Описание
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.
Затронутые продукты
Ссылки
- CVE-2026-4408
- SUSE Bug 1261163
Описание
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.
Затронутые продукты
Ссылки
- CVE-2026-4480
- SUSE Bug 1261161