USN-4409-1: Samba vulnerabilities

Releases

• Ubuntu 20.04 LTS
• Ubuntu 19.10
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM
• Ubuntu 12.04

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)

Update instructions

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

Ubuntu 20.04

• samba - 2:4.11.6+dfsg-0ubuntu1.3

Ubuntu 19.10

• samba - 2:4.10.7+dfsg-0ubuntu2.6

Ubuntu 18.04

• samba - 2:4.7.6+dfsg~ubuntu-0ubuntu2.17

Ubuntu 16.04

• samba - 2:4.3.11+dfsg-0ubuntu0.16.04.28

Ubuntu 14.04

• samba - 2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7

Ubuntu 12.04

• samba - 2:3.6.25-0ubuntu0.12.04.20

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

References

• CVE-2020-10730
• CVE-2020-10745
• CVE-2020-10760