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CVE-2021-44142

Published: 31 January 2022

The Samba vfs_fruit module uses extended file attributes (EA, xattr) to provide "...enhanced compatibility with Apple SMB clients and interoperability with a Netatalk 3 AFP fileserver." Samba versions prior to 4.13.17, 4.14.12 and 4.15.5 with vfs_fruit configured allow out-of-bounds heap read and write via specially crafted extended file attributes. A remote attacker with write access to extended file attributes can execute arbitrary code with the privileges of smbd, typically root.

Priority

High

CVSS 3 base score: 8.8

Status

Package Release Status
samba
Launchpad, Ubuntu, Debian
bionic
Released (2:4.7.6+dfsg~ubuntu-0ubuntu2.28)
focal
Released (2:4.13.17~dfsg-0ubuntu0.21.04.1)
impish
Released (2:4.13.17~dfsg-0ubuntu0.21.10.1)
jammy
Released (4.13.17~dfsg-0ubuntu1)
trusty
Released (2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12)
upstream
Released (4.13.17,4.14.12,4.15.5)
xenial
Released (2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1)