Vulnerability Details : CVE-2015-5240
Race condition in OpenStack Neutron before 2014.2.4 and 2015.1 before 2015.1.2, when using the ML2 plugin or the security groups AMQP API, allows remote authenticated users to bypass IP anti-spoofing controls by changing the device owner of a port to start with network: before the security group rules are applied.
Products affected by CVE-2015-5240
- cpe:2.3:a:openstack:neutron:2014.2.3:*:*:*:*:*:*:*
- cpe:2.3:a:openstack:neutron:2015.1.0:*:*:*:*:*:*:*
- cpe:2.3:a:openstack:neutron:2015.1.1:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2015-5240
0.09%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 24 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2015-5240
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
3.5
|
LOW | AV:N/AC:M/Au:S/C:N/I:P/A:N |
6.8
|
2.9
|
NIST |
CWE ids for CVE-2015-5240
-
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.Assigned by: nvd@nist.gov (Primary)
References for CVE-2015-5240
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http://rhn.redhat.com/errata/RHSA-2015-1909.html
RHSA-2015:1909 - Security Advisory - Red Hat Customer Portal
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https://bugs.launchpad.net/neutron/+bug/1489111
Bug #1489111 “[OSSA 2015-018] IP, MAC, and DHCP spoofing rules c...” : Bugs : neutron
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http://www.openwall.com/lists/oss-security/2015/09/08/9
oss-security - [OSSA 2015-018] Neutron firewall rules bypass through port update (CVE-2015-5240)
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https://bugzilla.redhat.com/show_bug.cgi?id=1258458
1258458 – (CVE-2015-5240) CVE-2015-5240 openstack-neutron: Firewall rules bypass through port update
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https://security.openstack.org/ossa/OSSA-2015-018.html
OpenStack Docs: OSSA-2015-018: Neutron firewall rules bypass through port updateVendor Advisory
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