CVE-2017-2591 389 Directory Server: DoS via OOB heap read in "attribute uniqueness" plugin

[Cedric Buissart <cbuissar () redhat com>]

Hi,

This is to disclose the following CVE:

CVE-2017-2591 389 Directory Server: DoS via OOB heap read

Description :

The "attribute uniqueness" plugin did not properly NULL-terminate an array
when building up its configuration, if a so called 'old-style'
configuration, was being used (Using nsslapd-pluginarg<X> parameters) .

A attacker, authenticated, but possibly also unauthenticated, could
possibly force the plugin to read beyond allocated memory and trigger a
segfault.

The crash could also possibly be triggered accidentally.

Upstream patch :
https://fedorahosted.org/389/changeset/ffda694dd622b31277da07be76d3469fad86150f/
Affected versions : from 1.3.4.0

Fixed version : 1.3.6

Impact: Low
CVSS3 scoring : 3.7 -- CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Upstream bug report : https://fedorahosted.org/389/ticket/48986

Best Regards,


-- 
Cedric Buissart,
Product Security