Improper input validation in IBM SAN Volume Controller, IBM Storwize, IBM Spectrum Virtualize and IBM FlashSystem products

1) Improper input validation

EUVDB-ID: #VU14437

Risk: Medium

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-5391

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists due to an error when handling reassembly of fragmented IPv4 and IPv6 packets. A remote attacker can send specially crafted packets, trigger time and calculation expensive fragment reassembly algorithms and cause the service to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

SAN Volume Controller and Storwize Family: before 8.2.1.2

External links

http://www.ibm.com/support/pages/node/872368

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.