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Ubuntu: USN-5542-1 (CVE-2021-3670): Samba vulnerabilities

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Ubuntu: USN-5542-1 (CVE-2021-3670): Samba vulnerabilities

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
05/09/2022
Created
08/29/2022
Added
08/02/2022
Modified
09/01/2022

Description

Details for this vulnerability have not been published by NIST at this point. Descriptions from software vendor advisories for this issue are provided below.

From USN-5542-1:

It was discovered that Samba did not handle MaxQueryDuration when being used in AD DC configurations, contrary to expectations. This issue only affected Ubuntu 20.04 LTS. (CVE-2021-3670)

Luke Howard discovered that Samba incorrectly handled certain restrictions associated with changing passwords. A remote attacker being requested to change passwords could possibly use this issue to escalate privileges. (CVE-2022-2031)

Luca Moro discovered that Samba incorrectly handled certain SMB1 communications. A remote attacker could possibly use this issue to obtain sensitive memory contents. (CVE-2022-32742)

Joseph Sutton discovered that Samba incorrectly handled certain password change requests. A remote attacker could use this issue to change passwords of other users, resulting in privilege escalation. (CVE-2022-32744)

Joseph Sutton discovered that Samba incorrectly handled certain LDAP add or modify requests. A remote attacker could possibly use this issue to cause Samba to crash, resulting in a denial of service. (CVE-2022-32745)

Joseph Sutton and Andrew Bartlett discovered that Samba incorrectly handled certain LDAP add or modify requests. A remote attacker could possibly use this issue to cause Samba to crash, resulting in a denial of service. (CVE-2022-32746)

Solution(s)

  • ubuntu-upgrade-samba

References

  • USN-5542-1
  • CVE-2021-3670
  • SUSE-SU-2022:1576-1

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