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USN-5260-2: Samba vulnerability

1 February 2022

Samba could be made to crash or run programs as an administrator if it received specially crafted network traffic.

Releases

Packages

  • samba - SMB/CIFS file, print, and login server for Unix

Details

Orange Tsai discovered that the Samba vfs_fruit module incorrectly handled
certain memory operations. A remote attacker could use this issue to cause
Samba to crash, resulting in a denial of service, or possibly execute
arbitrary code as root. (CVE-2021-44142)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 18.04

In general, a standard system update will make all the necessary changes.

References

Related notices

  • USN-5260-1: libsmbclient-dev, libnss-winbind, python3-samba, smbclient, samba, libpam-winbind, libsmbclient, samba-common, libwbclient0, libwbclient-dev, samba-common-bin, samba-dsdb-modules, ctdb, samba-vfs-modules, samba-testsuite, winbind, samba-dev, registry-tools, samba-libs
  • USN-5260-3: libsmbclient-dev, samba-doc, libnss-winbind, smbclient, samba, libpam-winbind, libsmbclient, samba-common, libwbclient0, libwbclient-dev, libsmbsharemodes0, samba-common-bin, samba-dsdb-modules, ctdb, libparse-pidl-perl, libsmbsharemodes-dev, samba-vfs-modules, python-samba, samba-testsuite, libpam-smbpass, winbind, samba-dev, registry-tools, samba-libs