Category Archives: Security

Security

Redhat

RHSA-2017:0893-1: Important: 389-ds-base security and bug fix update

Red Hat Enterprise Linux: An update for 389-ds-base is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of
Important. A Common Vulnerability Scoring System (CVSS) base score, which gives
a detailed severity rating, is available for each vulnerability from the CVE
link(s) in the References section.
CVE-2017-2668

Redhat

RHSA-2017:0892-1: Important: kernel security and bug fix update

Red Hat Enterprise Linux: An update for kernel is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of
Important. A Common Vulnerability Scoring System (CVSS) base score, which gives
a detailed severity rating, is available for each vulnerability from the CVE
link(s) in the References section.
CVE-2016-7910, CVE-2017-2636

Ubuntu

USN-3258-2: Dovecot regression

Ubuntu Security Notice USN-3258-2

11th April, 2017

dovecot regression

A security issue affects these releases of Ubuntu and its
derivatives:

  • Ubuntu 16.10
  • Ubuntu 16.04 LTS

Summary

USN-3258-1 introduced a regression in Dovecot.

Software description

  • dovecot
    – IMAP and POP3 email server

Details

USN-3258-1 intended to fix a vulnerability in Dovecot. Further investigation
revealed that only Dovecot versions 2.2.26 and newer were affected by the
vulnerability. Additionally, the change introduced a regression when Dovecot
was configured to use the “dict” authentication database. This update reverts
the change. We apologize for the inconvenience.

Original advisory details:

It was discovered that Dovecot incorrectly handled some usernames. An attacker
could possibly use this issue to cause Dovecot to hang or crash, resulting in a
denial of service.

Update instructions

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

Ubuntu 16.10:
dovecot-core

1:2.2.24-1ubuntu1.3
Ubuntu 16.04 LTS:
dovecot-core

1:2.2.22-1ubuntu2.4

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

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

References

CVE-2017-2669