Ubuntu 8.04 LTS / 9.10 / 10.04 LTS / 10.10 : openldap, openldap2.3 vulnerabilities (USN-1100-1)

medium Nessus Plugin ID 53257

Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

It was discovered that OpenLDAP did not properly check forwarded authentication failures when using a slave server and chain overlay.
If OpenLDAP were configured in this manner, an attacker could bypass authentication checks by sending an invalid password to a slave server. (CVE-2011-1024)

It was discovered that OpenLDAP did not properly perform authentication checks to the rootdn when using the back-ndb backend.
An attacker could exploit this to access the directory by sending an arbitrary password. Ubuntu does not ship OpenLDAP with back-ndb support by default. This issue did not affect Ubuntu 8.04 LTS.
(CVE-2011-1025)

It was discovered that OpenLDAP did not properly validate modrdn requests. An unauthenticated remote user could use this to cause a denial of service via application crash. (CVE-2011-1081).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected packages.

See Also

https://usn.ubuntu.com/1100-1/

Plugin Details

Severity: Medium

ID: 53257

File Name: ubuntu_USN-1100-1.nasl

Version: 1.12

Type: local

Agent: unix

Published: 4/1/2011

Updated: 9/19/2019

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.5

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:10.10, cpe:/o:canonical:ubuntu_linux:10.04:-:lts, cpe:/o:canonical:ubuntu_linux:9.10, p-cpe:/a:canonical:ubuntu_linux:libldap-2.4-2-dbg, p-cpe:/a:canonical:ubuntu_linux:ldap-utils, p-cpe:/a:canonical:ubuntu_linux:slapd-dbg, p-cpe:/a:canonical:ubuntu_linux:libldap2-dev, p-cpe:/a:canonical:ubuntu_linux:libldap-2.4-2, p-cpe:/a:canonical:ubuntu_linux:slapd, cpe:/o:canonical:ubuntu_linux:8.04:-:lts

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/31/2011

Vulnerability Publication Date: 3/19/2011

Reference Information

CVE: CVE-2011-1024, CVE-2011-1025, CVE-2011-1081

BID: 46363, 46831

USN: 1100-1