1. Ubuntu Security Notices
  2. USN-4409-1

USN-4409-1: Samba vulnerabilities

Publication date

2 July 2020

Overview

Several security issues were fixed in Samba.

Releases

Packages

  • samba - SMB/CIFS file, print, and login server for Unix

Details

Andrew Bartlett discovered that Samba incorrectly handled certain LDAP queries.
A remote attacker could use this issue to cause Samba to crash, resulting
in a denial of service, or possibly execute arbitrary code. This issue only
affected Ubuntu 18.04 LTS, Ubuntu 19.10 and Ubuntu 20.04 LTS. (CVE-2020-10730)

Douglas Bagnall discovered that Samba incorrectly handled certain queries.
A remote attacker could possibly use this issue to cause a denial of service.
(CVE-2020-10745)

Andrei Popa discovered that Samba incorrectly handled certain LDAP queries.
A remote attacker could use this issue to cause Samba to crash, resulting
in a denial of service, or possibly execute arbitrary code. This issue only
affected Ubuntu 18.04 LTS, Ubuntu 19.10 and Ubuntu 20.04 LTS.
(CVE-2020-10760)

Andrew Bartlett discovered that Samba incorrectly handled certain LDAP queries.
A remote attacker could use this issue to cause Samba to crash, resulting
in a denial of service, or possibly execute arbitrary code. This issue only
affected Ubuntu 18.04 LTS, Ubuntu 19.10 and Ubuntu 20.04 LTS. (CVE-2020-10730)

Douglas Bagnall discovered that Samba incorrectly handled certain queries.
A remote attacker could possibly use this issue to cause a denial of service.
(CVE-2020-10745)

Andrei Popa discovered that Samba incorrectly handled certain LDAP queries.
A remote attacker could use this issue to cause Samba to crash, resulting
in a denial of service, or possibly execute arbitrary code. This issue only
affected Ubuntu 18.04 LTS, Ubuntu 19.10 and Ubuntu 20.04 LTS.
(CVE-2020-10760)

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
20.04 focal samba –  2:4.11.6+dfsg-0ubuntu1.3
19.10 eoan samba –  2:4.10.7+dfsg-0ubuntu2.6
18.04 bionic samba –  2:4.7.6+dfsg~ubuntu-0ubuntu2.17
16.04 xenial samba –  2:4.3.11+dfsg-0ubuntu0.16.04.28
14.04 trusty samba –  2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7
12.04 precise samba –  2:3.6.25-0ubuntu0.12.04.20

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References

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