CVE-2011-1070 - Incorrect Authorization

Severity

78%

Complexity

18%

Confidentiality

98%

v86d before 0.1.10 do not verify if received netlink messages are sent by the kernel. This could allow unprivileged users to manipulate the video mode and potentially other consequences.

v86d before 0.1.10 do not verify if received netlink messages are sent by the kernel. This could allow unprivileged users to manipulate the video mode and potentially other consequences.

CVSS 3.1 Base Score 7.8. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

CVSS 2.0 Base Score 7.2. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C).

Demo Examples

Incorrect Authorization

CWE-863

The following code could be for a medical records application. It displays a record to already authenticated users, confirming the user's authorization using a value stored in a cookie.


               
}
}
setcookie("role", $role, time()+60*60*2);
die("\n");
DisplayMedicalHistory($_POST['patient_ID']);
die("You are not Authorized to view this record\n");

The programmer expects that the cookie will only be set when getRole() succeeds. The programmer even diligently specifies a 2-hour expiration for the cookie. However, the attacker can easily set the "role" cookie to the value "Reader". As a result, the $role variable is "Reader", and getRole() is never invoked. The attacker has bypassed the authorization system.

Overview

Type

Debian Linux

First reported 5 years ago

2019-11-14 01:15:00

Last updated 5 years ago

2019-11-18 16:08:00

Affected Software

Debian Linux 8.0 (Jessie)

8.0

Debian Linux 9.0

9.0

Debian Linux 10

10

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