Summary
Samba is an open-source implementation of the Server Message Block (SMB) protocol and the related Common Internet File System (CIFS) protocol, which allow PC-compatible machines to share files, printers, and various information.
Security Fix(es):
* samba: smbd allows client access to unix domain sockets on the file system as root (CVE-2023-3961)
* samba: SMB clients can truncate files with read-only permissions (CVE-2023-4091)
* samba: "rpcecho" development server allows denial of service via sleep() call on AD DC (CVE-2023-42669)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Fixed packages 34
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 8 | ctdb | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | libnetapi | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | libnetapi-devel | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | libsmbclient | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | libsmbclient-devel | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | libwbclient | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | libwbclient-devel | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | python3-samba | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | python3-samba-dc | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | python3-samba-devel | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | python3-samba-test | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | samba | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | samba-client | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | samba-client-libs | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | samba-common | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | samba-common-libs | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | samba-common-tools | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | samba-dc-libs | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | samba-dcerpc | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | samba-devel | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | samba-krb5-printing | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | samba-ldb-ldap-modules | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | samba-libs | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | samba-pidl | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | samba-test | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | samba-test-libs | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | samba-tools | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | samba-usershares | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | samba-vfs-iouring | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | samba-winbind | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | samba-winbind-clients | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | samba-winbind-krb5-locator | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | samba-winbind-modules | 4.18.6-2.el8_9.alma.1 |
| AlmaLinux · 8 | samba-winexe | 4.18.6-2.el8_9.alma.1 |
Vulnerabilities 3
-
Critical 9.1
Samba: smbd allows client access to unix domain sockets on the file system as root
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…
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Medium 6.5
Samba: smb clients can truncate files with read-only permissions
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 …
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Medium 6.5
Samba: "rpcecho" development server allows denial of service via sleep() call on ad dc
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" ser…
References
-
report
https://access.redhat.com/security/cve/CVE-2023-3961
-
report
https://access.redhat.com/security/cve/CVE-2023-4091
-
report
https://access.redhat.com/security/cve/CVE-2023-42669
-
report
https://bugzilla.redhat.com/2241881
-
report
https://bugzilla.redhat.com/2241882
-
report
https://bugzilla.redhat.com/2241884
-
advisory
https://errata.almalinux.org/8/ALSA-2023-7467.html