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

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CVE-2018-16596

Severity CVSS v4.0:
Pending analysis
Type:
CWE-787 Out-of-bounds Write
Publication date:
17/12/2018
Last modified:
24/08/2020

Description

A stack-based buffer overflow in the LAN UPnP service running on UDP port 1900 of Swisscom Internet-Box (2, Standard, and Plus) prior to v09.04.00 and Internet-Box light prior to v08.05.02 allows remote code execution. No authentication is required to exploit this vulnerability. Sending a simple UDP packet to port 1900 allows an attacker to execute code on a remote device. However, this is only possible if the attacker is inside the LAN. Because of ASLR, the success rate is not 100% and leads instead to a DoS of the UPnP service. The remaining functionality of the Internet Box is not affected. A reboot of the Internet Box is necessary to attempt the exploit again.

Impact

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

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

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

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

Base Score: 5.40 MEDIUM
Vector: AV:A/AC:M/Au:N/C:P/I:P/A:P

Attack Vector (AV): Adjacent
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
5.40
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:swisscom:internet-box_standard_firmware:*:*:*:*:*:*:*:* 09.04.00 (excluding)
cpe:2.3:h:swisscom:internet-box_2:-:*:*:*:*:*:*:*
cpe:2.3:h:swisscom:internet-box_standard:-:*:*:*:*:*:*:*
cpe:2.3:o:swisscom:internet-box_light_firmware:*:*:*:*:*:*:*:* 08.05.02 (excluding)
cpe:2.3:h:swisscom:internet-box_light:-:*:*:*:*:*:*:*
cpe:2.3:o:swisscom:internet-box_plus_firmware:*:*:*:*:*:*:*:* 09.04.00 (excluding)
cpe:2.3:h:swisscom:internet-box_plus:-:*:*:*:*:*:*:*
cpe:2.3:o:swisscom:internet-box_2_firmware:*:*:*:*:*:*:*:* 09.04.00 (including)
cpe:2.3:h:swisscom:internet-box_2:-:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools