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Amazon Linux AMI: CVE-2021-44142: Security patch for samba (ALAS-2022-1564)

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Amazon Linux AMI: CVE-2021-44142: Security patch for samba (ALAS-2022-1564)

Severity
9
CVSS
(AV:N/AC:L/Au:S/C:C/I:C/A:C)
Published
02/01/2022
Created
02/24/2022
Added
02/19/2022
Modified
10/14/2022

Description

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.

Solution(s)

  • amazon-linux-upgrade-samba

References

  • ALAS-2022-1564
  • CVE-2021-44142
  • USN-5260-1
  • USN-5260-2
  • USN-5260-3

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