CVE-2018-4073

Airlink Es450 Firmware vulnerability

CVSS

8.8

EPSS

25.4%

EPSS pct

98th

Exploited

No known

An exploitable Permission Assignment vulnerability exists in the ACEManager EmbeddedAceSet_Task.cgi functionality of Sierra Wireless AirLink ES450 FW 4.9.3. The the binary the endpoint /cgi-bin/Embeded_Ace_TLSet_Task.cgi is a very similar endpoint that is designed for use with setting table values that can cause an arbitrary setting writes, resulting in the unverified changes to any system setting. An attacker can make an authenticated HTTP request, or run the binary as any user, to trigger this vulnerability.

Affected vendor

Sierrawireless

Affected product

Airlink Es450 Firmware

CVSS vector

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

Weakness type (CWE)

CWE-732 — Incorrect Permission Assignment for Critical Resource

Published

2019-05-06

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 25.4% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2018-4073

Confirm whether Sierrawireless Airlink Es450 Firmware is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2018-4073.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-4073

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