ldb: Denial of Service -- Existing Account

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0600
                       USN-3895-1: LDB vulnerability
                             27 February 2019

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           ldb
Publisher:         Ubuntu
Operating System:  Ubuntu
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Denial of Service -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-3824  

Original Bulletin: 
   https://usn.ubuntu.com/3895-1/

Comment: This advisory references vulnerabilities in products which run on 
         platforms other than Ubuntu. It is recommended that administrators 
         running ldb check for an updated version of the software for their 
         operating system.

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USN-3895-1: LDB vulnerability
26 February 2019

ldb vulnerability
======================================================================

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

  o Ubuntu 18.10
  o Ubuntu 18.04 LTS
  o Ubuntu 16.04 LTS
  o Ubuntu 14.04 LTS

Summary

LDB could be made to crash if it received specially crafted network traffic.

Software Description

  o ldb - LDAP-like embedded database - tools

Details

It was discovered that LDB incorrectly handled certain search expressions. A
remote attacker could possibly use this issue to cause the Samba LDAP process
to crash, resulting in a denial of service.

Update instructions

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

Ubuntu 18.10
    libldb1 - 2:1.4.0+really1.3.5-2ubuntu0.1
Ubuntu 18.04 LTS
    libldb1 - 2:1.2.3-1ubuntu0.1
Ubuntu 16.04 LTS
    libldb1 - 2:1.1.24-1ubuntu3.1
Ubuntu 14.04 LTS
    libldb1 - 1:1.1.24-0ubuntu0.14.04.2

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

After a standard system update you need to reboot your computer to make all the
necessary changes.

References

  o CVE-2019-3824

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