USN-4341-1: Samba vulnerabilities

Releases

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

Packages

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

Details

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 19.10 and Ubuntu 20.04 LTS. (CVE-2020-10700)

It was discovered that Samba incorrectly handled certain LDAP queries. A
remote attacker could possibly use this issue to cause Samba to consume
resources, resulting in a denial of service. (CVE-2020-10704)

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-0ubuntu1.1

Ubuntu 19.10

• samba - 2:4.10.7+dfsg-0ubuntu2.5

Ubuntu 18.04

• samba - 2:4.7.6+dfsg~ubuntu-0ubuntu2.16

Ubuntu 16.04

• samba - 2:4.3.11+dfsg-0ubuntu0.16.04.26

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

References

• CVE-2020-10700
• CVE-2020-10704

Related notices

• USN-4341-2: libwbclient-dev, libwbclient0, libparse-pidl-perl, winbind, libnss-winbind, samba-libs, samba-dsdb-modules, samba-vfs-modules, libsmbsharemodes-dev, libpam-smbpass, samba-doc, libsmbclient-dev, samba-dev, samba-common-bin, libsmbsharemodes0, samba-common, samba, python-samba, registry-tools, samba-testsuite, smbclient, libsmbclient, libpam-winbind