CVE Vulnerabilities

CVE-2015-3148

Improper Access Control

Published: Apr 24, 2015 | Modified: Oct 30, 2018
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N
RedHat/V2
4 MODERATE
AV:N/AC:H/Au:N/C:P/I:P/A:N
RedHat/V3
Ubuntu
MEDIUM

cURL and libcurl 7.10.6 through 7.41.0 do not properly re-use authenticated Negotiate connections, which allows remote attackers to connect as other users via a request.

Weakness

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Affected Software

Name Vendor Start Version End Version
Fedora Fedoraproject 21 (including) 21 (including)
Fedora Fedoraproject 22 (including) 22 (including)
Red Hat Enterprise Linux 6 RedHat curl-0:7.19.7-46.el6 *
Red Hat Enterprise Linux 7 RedHat curl-0:7.29.0-25.el7 *
Curl Ubuntu devel *
Curl Ubuntu lucid *
Curl Ubuntu precise *
Curl Ubuntu trusty *
Curl Ubuntu trusty/esm *
Curl Ubuntu upstream *
Curl Ubuntu utopic *
Curl Ubuntu vivid *
Curl Ubuntu vivid/stable-phone-overlay *
Curl Ubuntu vivid/ubuntu-core *

Extended Description

Access control involves the use of several protection mechanisms such as:

When any mechanism is not applied or otherwise fails, attackers can compromise the security of the product by gaining privileges, reading sensitive information, executing commands, evading detection, etc. There are two distinct behaviors that can introduce access control weaknesses:

Potential Mitigations

  • Compartmentalize the system to have “safe” areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
  • Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.

References