Ubuntu Security Notice 4341-2 - USN-4341-1 fixed a vulnerability in Samba. This update provides the corresponding update for Ubuntu 14.04 ESM. 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. Various other issues were also addressed.
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Ubuntu Security Notice USN-4341-2
April 29, 2020
samba vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 14.04 ESM
Summary:
Samba could be made to consume resources if it received a specially
crafted LDAP query.
Software Description:
- samba: SMB/CIFS file, print, and login server for Unix
Details:
USN-4341-1 fixed a vulnerability in Samba. This update provides
the corresponding update for Ubuntu 14.04 ESM.
Original advisory details:
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 14.04 ESM:
samba 2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/4341-2
https://usn.ubuntu.com/4341-1
CVE-2020-10704