CVSS: 9.8EPSS: 0%CPEs: 7EXPL: 1CVE-2023-3961 – Samba: smbd allows client access to unix domain sockets on the file system as root
https://notcve.org/view.php?id=CVE-2023-3961
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. • https://access.redhat.com/errata/RHSA-2023:6209 https://access.redhat.com/errata/RHSA-2023:6744 https://access.redhat.com/errata/RHSA-2023:7371 https://access.redhat.com/errata/RHSA-2023:7408 https://access.redhat.com/errata/RHSA-2023:7464 https://access.redhat.com/errata/RHSA-2023:7467 https://access.redhat.com/security/cve/CVE-2023-3961 https://bugzilla.redhat.com/show_bug.cgi?id=2241881 https://bugzilla.samba.org/show_bug.cgi?id=15422 https://lists.fedoraproject.o • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •
CVSS: 6.5EPSS: 0%CPEs: 7EXPL: 0CVE-2023-4091 – Samba: smb clients can truncate files with read-only permissions
https://notcve.org/view.php?id=CVE-2023-4091
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. Se descubrió una vulnerabilidad en Samba, donde la falla permite a los clientes SMB truncar archivos, incluso con permisos de solo lectura cuando el módulo Samba VFS "acl_xattr" está configurado con "acl_xattr:ignore system acls = yes". El protocolo SMB permite abrir archivos cuando el cliente solicita acceso de solo lectura, pero luego trunca implícitamente el archivo abierto a 0 bytes si el cliente especifica una solicitud de disposición de creación de SOBRESCRITURA separada. • https://access.redhat.com/errata/RHSA-2023:6209 https://access.redhat.com/errata/RHSA-2023:6744 https://access.redhat.com/errata/RHSA-2023:7371 https://access.redhat.com/errata/RHSA-2023:7408 https://access.redhat.com/errata/RHSA-2023:7464 https://access.redhat.com/errata/RHSA-2023:7467 https://access.redhat.com/security/cve/CVE-2023-4091 https://bugzilla.redhat.com/show_bug.cgi?id=2241882 https://bugzilla.samba.org/show_bug.cgi?id=15439 https://lists.debian.org/ • CWE-276: Incorrect Default Permissions •
CVSS: 6.5EPSS: 0%CPEs: 11EXPL: 0CVE-2023-42669 – Samba: "rpcecho" development server allows denial of service via sleep() call on ad dc
https://notcve.org/view.php?id=CVE-2023-42669
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. • https://access.redhat.com/errata/RHSA-2023:6209 https://access.redhat.com/errata/RHSA-2023:6744 https://access.redhat.com/errata/RHSA-2023:7371 https://access.redhat.com/errata/RHSA-2023:7408 https://access.redhat.com/errata/RHSA-2023:7464 https://access.redhat.com/errata/RHSA-2023:7467 https://access.redhat.com/security/cve/CVE-2023-42669 https://bugzilla.redhat.com/show_bug.cgi?id=2241884 https://bugzilla.samba.org/show_bug.cgi?id=15474 https://security.netapp.com& • CWE-400: Uncontrolled Resource Consumption •
CVSS: 7.8EPSS: 17%CPEs: 18EXPL: 18CVE-2023-4911 – GNU C Library Buffer Overflow Vulnerability
https://notcve.org/view.php?id=CVE-2023-4911
A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges. Se descubrió un desbordamiento del búfer en el cargador dinámico ld.so de la librería GNU C mientras se procesaba la variable de entorno GLIBC_TUNABLES. Este problema podría permitir que un atacante local utilice variables de entorno GLIBC_TUNABLES manipuladas con fines malintencionados al iniciar archivos binarios con permiso SUID para ejecutar código con privilegios elevados. Dubbed Looney Tunables, Qualys discovered a buffer overflow vulnerability in the glibc dynamic loader's processing of the GLIBC_TUNABLES environment variable. • https://github.com/leesh3288/CVE-2023-4911 https://github.com/ruycr4ft/CVE-2023-4911 https://github.com/guffre/CVE-2023-4911 https://github.com/NishanthAnand21/CVE-2023-4911-PoC https://github.com/RickdeJager/CVE-2023-4911 https://github.com/hadrian3689/looney-tunables-CVE-2023-4911 https://github.com/Green-Avocado/CVE-2023-4911 https://github.com/xiaoQ1z/CVE-2023-4911 https://github.com/Diego-AltF4/CVE-2023-4911 https://github.com/KernelKrise/CVE-2023-4911 https:/&# • CWE-122: Heap-based Buffer Overflow CWE-787: Out-of-bounds Write •
CVSS: 7.5EPSS: 0%CPEs: 31EXPL: 0CVE-2023-5157 – Mariadb: node crashes with transport endpoint is not connected mysqld got signal 6
https://notcve.org/view.php?id=CVE-2023-5157
A vulnerability was found in MariaDB. An OpenVAS port scan on ports 3306 and 4567 allows a malicious remote client to cause a denial of service. Se encontró una vulnerabilidad en MariaDB. Un escaneo de puertos OpenVAS en los puertos 3306 y 4567 permite que un cliente remoto malicioso provoque una denegación de servicio. • https://access.redhat.com/errata/RHSA-2023:5683 https://access.redhat.com/errata/RHSA-2023:5684 https://access.redhat.com/errata/RHSA-2023:6821 https://access.redhat.com/errata/RHSA-2023:6822 https://access.redhat.com/errata/RHSA-2023:6883 https://access.redhat.com/errata/RHSA-2023:7633 https://access.redhat.com/security/cve/CVE-2023-5157 https://bugzilla.redhat.com/show_bug.cgi?id=2240246 • CWE-400: Uncontrolled Resource Consumption •