Improper input validation in Red Hat OpenStack - CVE-2017-9263

Vulnerability identifier: #VU8432

CSH Severity: Low

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2017-9263

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

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

The weakness exists in the Open vSwitch (OvS) component due to improper parsing of an OpenFlow role status message. A remote attacker with access to a malicious switch can send a specially crafted OpenFlow role status message, trigger a call to the abort() function for undefined role status reasons in the ofp_print_role_status_message function in lib/ofp-print.c and cause the application to crash.

Successful exploitation of the vulnerability results in denial of service.

Red Hat OpenStack
Red Hat Virtualization
Red Hat Enterprise Linux Fast Datapath
SUSE Linux
Ubuntu
Fedora
openvswitch (Red Hat package)
openvswitch

Install update from vendor's website.

Red Hat OpenStack - addressed in versions 10.0, 11.0
openvswitch (Red Hat package) - addressed in versions 2.4.1-2.git20160727.el7ost, 2.6.1-13.git20161206.el7ost, 2.7.2-1.git20170719.el7fdp
openvswitch - update to 2.7.1-2.fc26

• https://access.redhat.com/errata/RHSA-2017:2698

• Multiple vulnerabilities in Red Hat OpenStack
• Ubuntu update for Open vSwitch
• SUSE Linux update for openvswitch
• Red Hat update for openvswitch
• Red Hat update for openvswitch
• Fedora 26 update for openvswitch
• Fast Datapath for Red Hat Enterprise Linux 7 update for openvswitch
• Red Hat Enterprise Linux OpenStack Platform 6 update for openvswitch
• Multiple vulnerabilities in Red Hat OpenStack 10.0 packages
• Multiple vulnerabilities in Red Hat OpenStack 11.0 packages