SecurEnvoy SecurMail up to 9.2 Email Message cross site scripting

Summaryinfo

A vulnerability, which was classified as problematic, has been found in SecurEnvoy SecurMail up to 9.2. Affected is an unknown function of the component Email Message Handler. This manipulation causes cross site scripting. The identification of this vulnerability is CVE-2018-7707. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in SecurEnvoy SecurMail up to 9.2 and classified as problematic. Affected by this vulnerability is an unknown functionality of the component Email Message Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

Cross-site scripting (XSS) vulnerability in SecurEnvoy SecurMail before 9.2.501 allows remote attackers to inject arbitrary web script or HTML via an HTML-formatted e-mail message.

The bug was discovered 03/12/2018. The weakness was shared 03/15/2018 as confirmed mailinglist post (Full-Disclosure). It is possible to read the advisory at seclists.org. This vulnerability is known as CVE-2018-7707 since 03/05/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

A public exploit has been developed by SEC Consult and been published before and not just after the advisory. It is possible to download the exploit 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 2 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370828 (SecurEnvoy SecurMail multiple critical vulnerabilities).

Upgrading to version 9.2.501 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Exploit-DB (44285). The entries VDB-114613, VDB-114614, VDB-114615 and VDB-114616 are related to this item. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• SecurEnvoy

Name

• SecurMail

Version

• 9.0
• 9.1
• 9.2

CPE 2.3info

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• 🔍
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CPE 2.2info

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Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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