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Amazon Linux AMI: CVE-2019-14907: Security patch for samba (ALAS-2020-1452)

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Amazon Linux AMI: CVE-2019-14907: Security patch for samba (ALAS-2020-1452)

Severity
3
CVSS
(AV:N/AC:H/Au:N/C:N/I:N/A:P)
Published
01/21/2020
Created
11/20/2020
Added
11/18/2020
Modified
11/18/2020

Description

All samba versions 4.9.x before 4.9.18, 4.10.x before 4.10.12 and 4.11.x before 4.11.5 have an issue where if it is set with "log level = 3" (or above) then the string obtained from the client, after a failed character conversion, is printed. Such strings can be provided during the NTLMSSP authentication exchange. In the Samba AD DC in particular, this may cause a long-lived process(such as the RPC server) to terminate. (In the file server case, the most likely target, smbd, operates as process-per-client and so a crash there is harmless).

Solution(s)

  • amazon-linux-upgrade-samba

References

  • ALAS-2020-1452
  • USN-4244-1
  • CVE-2019-14907

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