Vulnerability identifier: #VU7187

Vulnerability risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-2780

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
MatrixSSL
Server applications / Server solutions for antivurus protection

Vendor: InsideSecure

Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists in the X509 certificate parsing functionality of InsideSecure MatrixSSL due to heap-based buffer overflow. A remote attacker can supply a specially crafted x509 certificate when initiating secure connection, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation
Update to version 3.9.3.

Vulnerable software versions

MatrixSSL: 3.8.7 b

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External links
http://talosintelligence.com/vulnerability_reports/TALOS-2017-0276

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.