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AUSCERT External Security Bulletin Redistribution
ESB-2020.1613
Ubuntu: OpenLDAP vulnerability
7 May 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: OpenLDAP
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-12243
Reference: ESB-2020.1569
Original Bulletin:
https://usn.ubuntu.com/4352-1/
https://usn.ubuntu.com/4352-2/
Comment: This bulletin contains two (2) Ubuntu security advisories.
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USN-4352-1: OpenLDAP vulnerability
6 May 2020
openldap vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 20.04 LTS
o Ubuntu 19.10
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
Summary
OpenLDAP could be made to crash if it received specially crafted network
traffic.
Software Description
o openldap - Lightweight Directory Access Protocol
Details
It was discovered that OpenLDAP incorrectly handled certain queries. A remote
attacker could possibly use this issue to cause OpenLDAP to consume resources,
resulting in a denial of service.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 20.04 LTS
slapd - 2.4.49+dfsg-2ubuntu1.2
Ubuntu 19.10
slapd - 2.4.48+dfsg-1ubuntu1.1
Ubuntu 18.04 LTS
slapd - 2.4.45+dfsg-1ubuntu1.5
Ubuntu 16.04 LTS
slapd - 2.4.42+dfsg-2ubuntu3.8
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
o CVE-2020-12243
- ---------------------------------------------------------------------------
USN-4352-2: OpenLDAP vulnerability
6 May 2020
openldap vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 14.04 ESM
o Ubuntu 12.04 ESM
Summary
OpenLDAP could be made to crash if it received specially crafted network
traffic.
Software Description
o openldap - Lightweight Directory Access Protocol
Details
USN-4352-1 fixed a vulnerability in OpenLDAP. This update provides the
corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.
Original advisory details:
It was discovered that OpenLDAP incorrectly handled certain queries. A remote
attacker could possibly use this issue to cause OpenLDAP to consume resources,
resulting in a denial of service.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 14.04 ESM
slapd - 2.4.31-1+nmu2ubuntu8.5+esm2
Ubuntu 12.04 ESM
slapd - 2.4.28-1.1ubuntu4.10
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
o USN-4352-1
o CVE-2020-12243
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