Westermo WeOS Stack-Based Buffer Overflow (CVE-2015-7547)

high Tenable OT Security Plugin ID 502180

Synopsis

The remote OT asset is affected by a vulnerability.

Description

An attacker that successfully masquerade as an upstream DNS server may serve the WeOS device with malicious DNS query response that can allow the attacker full unauthorized access to the device. The glibc DNS client side resolver is vulnerable to a stack-based buffer overflow when the getaddrinfo() library function is used. Software using this function may be exploited with attacker-controlled domain names, attacker-controlled DNS servers, or through a man-in-the-middle attack.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

Refer to the vendor advisory.

Plugin Details

Severity: High

ID: 502180

Version: 1.1

Type: remote

Family: Tenable.ot

Published: 4/3/2024

Updated: 4/3/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: High

Score: 8.4

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2015-7547

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.3

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:westermo:weos

Required KB Items: Tenable.ot/Westermo

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/19/2016

Vulnerability Publication Date: 2/19/2016

Reference Information

CVE: CVE-2015-7547

Detections

Analytics