Memory corruption in IBM ProtecTIER

1) Memory corruption

EUVDB-ID: #VU638

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-2108

CWE-ID: CWE-120 - Buffer overflow

Exploit availability: No

Description

The vulnerability allows a remote user to cause memory corruption on the target system.

The weakness exists due to buffer underflow with an out-of-bounds write in i2c_ASN1_INTEGER. As ASN.1 parser (specifically, d2i_ASN1_TYPE) can misinterpret a large universal tag as a negative zero value, attacker may easily corrupt memory.

Successful exploitation of the vulnerability will allow a malicious user to trigger memory corruption on the vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

ProtecTIER Entry Edition (PID 5639-PTC) - TS7610 / TS7620: All versions

ProtecTIER Gateway for System Z (PID 5639-FPA): All versions

ProtecTIER Appliance Edition (PID 5639-PTB) - TS7650AP1: All versions

ProtecTIER Enterprise Edition (PID 5639-PTA) - TS7650G: All versions

External links

http://www.ibm.com/support/pages/node/695443

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.