Multiple vulnerabilities in IBM SAN Volume Controller, IBM Storwize, IBM Spectrum Virtualize and IBM FlashSystem products
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2016-6515 CVE-2016-6210 |
| CWE-ID | CWE-400 CWE-200 |
| Exploitation vector | Network |
| Public exploit |
Public exploit code for vulnerability #1 is available. Public exploit code for vulnerability #2 is available. |
| Vulnerable software Subscribe |
IBM Storwize V3500 Hardware solutions / Other hardware appliances IBM Storwize V3700 Hardware solutions / Other hardware appliances IBM Storwize V5000 Hardware solutions / Other hardware appliances IBM Storwize V7000 Hardware solutions / Other hardware appliances IBM FlashSystem V9000 Hardware solutions / Other hardware appliances IBM Spectrum Virtualize Software Hardware solutions / Other hardware appliances IBM Spectrum Virtualize for Public Cloud Hardware solutions / Other hardware appliances |
| Vendor | IBM Corporation |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Consuming excessive CPU resources on the target system
EUVDB-ID: #VU252
Risk: Medium
CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2016-6515
CWE-ID:
CWE-400 - Resource exhaustion
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to consume excessive CPU resources on the target system.
The vulnerability exists in the crypt(3) function, which accepts passwords longer that 1024 characters in auth_password() function in the auth_passwd.c . A remote unauthenticated attacker can submit a very long string as a password and consume excessive CPU resources.
Successful exploitation of this vulnerability may result in denial of service.
MitigationInstall update from vendor's website.
Vulnerable software versionsIBM Storwize V3500: before 8.1.2.1
IBM Storwize V3700: before 8.1.2.1
IBM Storwize V5000: before 8.1.2.1
IBM Storwize V7000: before 8.1.2.1
IBM FlashSystem V9000: before 8.1.2.1
IBM Spectrum Virtualize Software: before 8.1.2.1
IBM Spectrum Virtualize for Public Cloud: before 8.1.2.1
External linkshttp://www.ibm.com/support/pages/node/650899
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.
2) User enumeration via covert timing channel
EUVDB-ID: #VU255
Risk: Medium
CVSSv3.1: 4.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:F/RL:O/RC:C]
CVE-ID: CVE-2016-6210
CWE-ID:
CWE-200 - Information exposure
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to enumerate users on system.
The vulnerability exists in most systems where the Blowfish algorithm runs faster than SHA256/SHA512. A remote unauthenticated attacker can determine valid usernames by sending a specially crafted request with a large password (approximately 10,000 characters) to the target ssh daemon. On systems where a valid user's password has been hashed with SHA256/SHA512, the response time will be shorter for a non-existent username than for a valid username.
Successful exploitation of this vulnerability may result in disclosure or user logins.
MitigationInstall update from vendor's website.
Vulnerable software versionsIBM Storwize V3500: before 8.1.2.1
IBM Storwize V3700: before 8.1.2.1
IBM Storwize V5000: before 8.1.2.1
IBM Storwize V7000: before 8.1.2.1
IBM FlashSystem V9000: before 8.1.2.1
IBM Spectrum Virtualize Software: before 8.1.2.1
IBM Spectrum Virtualize for Public Cloud: before 8.1.2.1
External linkshttp://www.ibm.com/support/pages/node/650899
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, a fully functional exploit for this vulnerability is available.
