Ubuntu 12.10 / 13.04 / 13.10 : keystone vulnerability (USN-2034-1)

Low Nessus Plugin ID 71094


The remote Ubuntu host is missing a security-related patch.


Brant Knudson discovered a logic error in the LDAP backend in Keystone where removing a role on a tenant for a user who does not have that role would instead add the role to the user. An authenticated user could use this to gain privileges. Ubuntu is not configured to use the LDAP Keystone backend by default.

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.


Update the affected python-keystone package.

Plugin Details

Severity: Low

ID: 71094

File Name: ubuntu_USN-2034-1.nasl

Version: $Revision: 1.3 $

Type: local

Agent: unix

Published: 2013/11/26

Modified: 2016/05/25

Dependencies: 12634

Risk Information

Risk Factor: Low


Base Score: 3.3

Temporal Score: 2.9

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

Temporal Vector: CVSS2#E:ND/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:python-keystone, cpe:/o:canonical:ubuntu_linux:12.10, cpe:/o:canonical:ubuntu_linux:13.04, cpe:/o:canonical:ubuntu_linux:13.10

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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2013/11/25

Reference Information

CVE: CVE-2013-4477

BID: 63395

USN: 2034-1