SB2017050824 - Multiple vulnerabilities in IBM Flex System FC3171 8Gb SAN Switch and SAN Pass-thru and QLogic Virtual Fabric Extension Module for IBM BladeCenter
Published: May 8, 2017 Updated: July 19, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Cryptographic issues (CVE-ID: CVE-2016-5419)
The 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.
2) Improper Authorization (CVE-ID: CVE-2016-5420)
The 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.
3) Use-after-free (CVE-ID: CVE-2016-5421)
The 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.
Remediation
Install update from vendor's website.