Vulnerability identifier: #VU63

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2016-2210

CWE-ID: CWE-272

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Symantec Protection for SharePoint Servers (SPSS)
Server applications / Other server solutions
Symantec Mail Security for Domino (SMSDOM)
Server applications / IDS/IPS systems, Firewalls and proxy servers
Symantec Mail Security for Microsoft Exchange (SMSMSE)
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor: Broadcom

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

The vulnerability exists due to boundary error when decompressing LZH and LHA archives in the dec2lha library. A remote unauthenticated attacker can cause stacked-based buffer overflow by sending a specially crafted archive to vulnerable server.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Updates to resolve these issues can be installed using product update functionality. Users of Symantec Endpoint Protection (SEP), Symantec Protection Engine (SPE), Symantec Protection for SharePoint Servers (SPSS), Symantec Mail Security for Microsoft Exchange (SMSMSE) and Symantec Mail Security for Domino (SMSDOM) should apply custom patches. For more information, please refer to vendors advisory, specified in External links section.

Vulnerable software versions

Symantec Protection for SharePoint Servers (SPSS): 6.0.3 - 6.0.5

Symantec Mail Security for Domino (SMSDOM): 8.0.9 - 8.1.3

Symantec Mail Security for Microsoft Exchange (SMSMSE): 6.5.8 - 7.5.4

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External links
http://bugs.chromium.org/p/project-zero/issues/detail?id=814&q=label%3AVendor-Symantec

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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. However, proof of concept for this vulnerability is available.