Out-of-bounds Write Affecting samba package, versions <2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1


Severity

Recommended
0.0
high
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
18.05% (97th percentile)

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  • Snyk IDSNYK-UBUNTU1604-SAMBA-2388662
  • published31 Jan 2022
  • disclosed21 Feb 2022

Introduced: 31 Jan 2022

CVE-2021-44142  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Ubuntu:16.04 samba to version 2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream samba package and not the samba package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 relevant fixed versions and status.

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.

CVSS Scores

version 3.1