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SUSE: CVE-2023-4091: SUSE Linux Security Advisory

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SUSE: CVE-2023-4091: SUSE Linux Security Advisory

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
10/10/2023
Created
10/11/2023
Added
10/11/2023
Modified
11/15/2023

Description

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.

Solution(s)

  • suse-upgrade-ctdb
  • suse-upgrade-ctdb-pcp-pmda
  • suse-upgrade-libsamba-policy-devel
  • suse-upgrade-libsamba-policy-python3-devel
  • suse-upgrade-libsamba-policy0-python3
  • suse-upgrade-libsamba-policy0-python3-32bit
  • suse-upgrade-samba
  • suse-upgrade-samba-ad-dc
  • suse-upgrade-samba-ad-dc-libs
  • suse-upgrade-samba-ad-dc-libs-32bit
  • suse-upgrade-samba-ceph
  • suse-upgrade-samba-client
  • suse-upgrade-samba-client-32bit
  • suse-upgrade-samba-client-libs
  • suse-upgrade-samba-client-libs-32bit
  • suse-upgrade-samba-devel
  • suse-upgrade-samba-devel-32bit
  • suse-upgrade-samba-doc
  • suse-upgrade-samba-dsdb-modules
  • suse-upgrade-samba-gpupdate
  • suse-upgrade-samba-ldb-ldap
  • suse-upgrade-samba-libs
  • suse-upgrade-samba-libs-32bit
  • suse-upgrade-samba-libs-python3
  • suse-upgrade-samba-libs-python3-32bit
  • suse-upgrade-samba-python3
  • suse-upgrade-samba-test
  • suse-upgrade-samba-tool
  • suse-upgrade-samba-winbind
  • suse-upgrade-samba-winbind-libs
  • suse-upgrade-samba-winbind-libs-32bit

References

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