PT-2012-2894 · Red Hat+1 · 389 Directory Server+2

Rich Megginson + 1 · Published 2012-06-19 · Updated 2012-07-17 · CVE-2012-0833

Positive Technologies (AI Summary)

CVSS v2.0

2.3

Low

Base vector

AV:A/AC:M/Au:S/C:N/I:N/A:P

Name of the Vulnerable Software and Affected Versions 389 Directory Server versions prior to 1.2.10

Description The issue arises from the improper handling of access control instructions (ACIs) that utilize certificate groups by the acllas handle group entry function. This allows remote authenticated LDAP users with a certificate group to cause a denial of service, characterized by an infinite loop and excessive CPU consumption, by binding to the server.

Recommendations For versions prior to 1.2.10, update to version 1.2.10 or later to resolve the issue. As a temporary workaround, consider restricting access to the acllas handle group entry function in the servers/plugins/acl/acllas.c file until a patch is applied.

Exploit

Fix

DoS

Weakness Enumeration

CWE-264

Related Identifiers

CESA-2012_0813

CVE-2012-0833

RHSA-2012:0813

RHSA-2012_0813

RHSA-2013:0549

Affected Products

389 Directory Server

Centos

Red Hat

References · 15

• 🔥 https://fedorahosted.org/389/changeset/1bbbb3e5049c1aa0650546efab87ed2f1ea59637/389-ds-base · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2012-0833 · Security Note
• http://secunia.com/advisories/49562 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-0833 · Security Note
• http://rhn.redhat.com/errata/RHSA-2012-0813.html · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2012-0813.html · Vendor Advisory
• http://secunia.com/advisories/48035 · Vendor Advisory
• https://fedorahosted.org/389/ticket/162 · Note
• https://lists.centos.org/pipermail/centos-announce/2012-July/030752.html · Note
• https://access.redhat.com/security/cve/CVE-2012-0833 · Note
• https://lists.centos.org/pipermail/centos-announce/2012-July/055633.html · Note
• https://rhn.redhat.com/errata/RHSA-2012-0813.html · Note
• https://lists.centos.org/pipermail/centos-announce/2012-July/080876.html · Note
• https://access.redhat.com/errata/RHSA-2012:0813 · Note
• https://lists.centos.org/pipermail/centos-announce/2012-July/068189.html · Note