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