Multiple vulnerabilities in IBM Flex System FC3171 8Gb SAN Switch and SAN Pass-thru and QLogic Virtual Fabric Extension Module for IBM BladeCenter
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2016-5419 CVE-2016-5420 CVE-2016-5421 |
| CWE-ID | CWE-310 CWE-285 CWE-416 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
QLogic Virtual Fabric Extension Module for IBM BladeCenter Hardware solutions / Other hardware appliances Flex System FC3171 8Gb SAN Switch Hardware solutions / Other hardware appliances |
| Vendor | IBM Corporation |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Cryptographic issues
EUVDB-ID: #VU32263
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2016-5419
CWE-ID:
CWE-310 - Cryptographic Issues
Exploit availability: No
DescriptionThe vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
curl and libcurl before 7.50.1 do not prevent TLS session resumption when the client certificate has changed, which allows remote attackers to bypass intended restrictions by resuming a session.
MitigationInstall update from vendor's website.
Vulnerable software versionsQLogic Virtual Fabric Extension Module for IBM BladeCenter: before 9.0.3.19.00
Flex System FC3171 8Gb SAN Switch: before 9.1.9.02.00
External linkshttp://www.ibm.com/support/pages/node/868600
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.
2) Improper Authorization
EUVDB-ID: #VU378
Risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2016-5420
CWE-ID:
CWE-285 - Improper Authorization
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to an error when handling client TLS certificates during connection reuse. libcurl supports reuse of established connections for subsequent requests. It does this by keeping a few previous connections "alive" in a connection pool so that a subsequent request that can use one of them instead of creating a new connection will do so.
When using a client certificate for a connection that was then put into the connection pool, that connection could then wrongly get reused in a subsequent request to that same server that either didn't use a client certificate at all or that asked to use a different client certificate thus trying to tell the user that it is a different entity.
This mistakenly using the wrong connection could of course lead to applications sending requests to the wrong realms of the server using authentication that it wasn't supposed to have for those operations.
Install update from vendor's website.
Vulnerable software versionsQLogic Virtual Fabric Extension Module for IBM BladeCenter: before 9.0.3.19.00
Flex System FC3171 8Gb SAN Switch: before 9.1.9.02.00
External linkshttp://www.ibm.com/support/pages/node/868600
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.
3) Use-after-free
EUVDB-ID: #VU32262
Risk: High
CVSSv3.1: 7.1 [AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2016-5421
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error when processing unknown vectors. A attackers can control which connection is used or possibly have unspecified other impact.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
MitigationInstall update from vendor's website.
Vulnerable software versionsQLogic Virtual Fabric Extension Module for IBM BladeCenter: before 9.0.3.19.00
Flex System FC3171 8Gb SAN Switch: before 9.1.9.02.00
External linkshttp://www.ibm.com/support/pages/node/868600
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.
