Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2018-14557

Severity CVSS v4.0:
Pending analysis
Type:
CWE-119 Buffer Errors
Publication date:
25/04/2019
Last modified:
02/05/2019

Description

An issue was discovered on Tenda AC7 devices with firmware through V15.03.06.44_CN(AC7), AC9 devices with firmware through V15.03.05.19(6318)_CN(AC9), and AC10 devices with firmware through V15.03.06.23_CN(AC10). A buffer overflow vulnerability exists in the router's web server (httpd). When processing the page parameters for a post request, the value is directly written with sprintf to a local variable placed on the stack, which overrides the return address of the function, a causing buffer overflow.

Impact

Vector 3.x
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete

Base Score 2.0
7.80
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:tenda:ac7_firmware:*:*:*:*:*:*:*:* 15.03.06.44_cn (including)
cpe:2.3:h:tenda:ac7:-:*:*:*:*:*:*:*
cpe:2.3:o:tenda:ac9_firmware:*:*:*:*:*:*:*:* 15.03.05.19\(6318\)_cn (including)
cpe:2.3:h:tenda:ac9:-:*:*:*:*:*:*:*
cpe:2.3:o:tenda:ac10_firmware:*:*:*:*:*:*:*:* 15.03.06.23_cn (including)
cpe:2.3:h:tenda:ac10:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools