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AUSCERT External Security Bulletin Redistribution
ESB-2023.3786
USN-6197-1: OpenLDAP vulnerability
4 July 2023
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AusCERT Security Bulletin Summary
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Product: OpenLDAP
Publisher: Ubuntu
Operating System: Ubuntu
Resolution: Patch/Upgrade
CVE Names: CVE-2023-2953
Original Bulletin:
https://ubuntu.com/security/notices/USN-6197-1
Comment: CVSS (Max): 7.5 CVE-2023-2953 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVSS Source: NVD
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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USN-6197-1: OpenLDAP vulnerability
3 July 2023
OpenLDAP could be made to crash if it received specially crafted input.
Releases
o Ubuntu 18.04 ESM
o Ubuntu 16.04 ESM
o Ubuntu 14.04 ESM
Packages
o openldap – Lightweight Directory Access Protocol
Details
It was discovered that OpenLDAP was not properly performing bounds checks
when executing functions related to LDAP URLs. An attacker could possibly
use this issue to cause a denial of service.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 18.04
o slapd – 2.4.45+dfsg-1ubuntu1.11+esm1
Available with Ubuntu Pro
Ubuntu 16.04
o slapd – 2.4.42+dfsg-2ubuntu3.13+esm2
Available with Ubuntu Pro
Ubuntu 14.04
o slapd – 2.4.31-1+nmu2ubuntu8.5+esm6
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References
o CVE-2023-2953
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