Trend Micro Email Encryption Gateway 5.5 Update certificate validation

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
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6.6$0-$5k0.00

A vulnerability, which was classified as critical, was found in Trend Micro Email Encryption Gateway 5.5. This affects an unknown part of the component Update Handler. The manipulation with an unknown input leads to a certificate validation vulnerability. CWE is classifying the issue as CWE-295. The product does not validate, or incorrectly validates, a certificate. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

An Insecure Update via HTTP vulnerability in Trend Micro Email Encryption Gateway 5.5 could allow an attacker to eavesdrop and tamper with with certain types of update data.

The bug was discovered 02/21/2018. The weakness was presented 03/15/2018 as EDB-ID 44166 as confirmed exploit (Exploit-DB). It is possible to read the advisory at exploit-db.com. This vulnerability is uniquely identified as CVE-2018-6219 since 01/25/2018. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available. The attack technique deployed by this issue is T1587.003 according to MITRE ATT&CK.

A public exploit has been developed by Core Security and been published before and not just after the advisory. The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 22 days. During that time the estimated underground price was around $5k-$25k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Exploit-DB (44166). See 114669, 114664, 114665 and 114666 for similar entries.

Productinfo

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Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.3
VulDB Temp Score: 6.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Certificate validation
CWE: CWE-295 / CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Core Security
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/25/2018 🔍
02/21/2018 +27 days 🔍
02/22/2018 +1 days 🔍
02/22/2018 +0 days 🔍
03/15/2018 +21 days 🔍
03/15/2018 +0 days 🔍
03/16/2018 +1 days 🔍
01/14/2020 +669 days 🔍

Sourcesinfo

Vendor: trendmicro.com

Advisory: EDB-ID 44166
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-6219 (🔍)
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/16/2018 08:16
Updated: 01/14/2020 09:33
Changes: 03/16/2018 08:16 (67), 01/14/2020 09:33 (1)
Complete: 🔍

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