Multiple vulnerabilities in Symantec Messaging Gateway

Published: 2017-08-11 | Updated: 2020-10-21

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2017-6327 CVE-2017-6328
CWE-ID	CWE-20 CWE-352
Exploitation vector	Local network
Public exploit	Vulnerability #1 is being exploited in the wild. Public exploit code for vulnerability #2 is available.
Vulnerable software Subscribe	Symantec Messaging Gateway Client/Desktop applications / Antivirus software/Personal firewalls
Vendor	Broadcom

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU47864

Risk: Low

CVSSv3.1: 6.6 [CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-6327

CWE-ID: CWE-20 - Improper input validation

Exploit availability: Yes

Description

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

The vulnerability exists due to insufficient validation of user-supplied input. A remote administrator on the local network can execute arbitrary code on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Symantec Messaging Gateway: before 10.6.3-267

External links

http://seclists.org/fulldisclosure/2017/Aug/28
http://www.securityfocus.com/bid/100135
http://www.exploit-db.com/exploits/42519/
http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=&suid=20170810_00

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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

2) Cross-site request forgery

EUVDB-ID: #VU47865

Risk: Low

CVSSv3.1: 4.5 [CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-6328

CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin. A remote attacker on the local network can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.