Vulnerability Details : CVE-2021-3499
A vulnerability was found in OVN Kubernetes in versions up to and including 0.3.0 where the Egress Firewall does not reliably apply firewall rules when there is multiple DNS rules. It could lead to potentially lose of confidentiality, integrity or availability of a service.
Products affected by CVE-2021-3499
- cpe:2.3:a:ovn:ovn-kubernetes:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-3499
0.14%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 35 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-3499
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
5.6
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L |
2.2
|
3.4
|
NIST |
CWE ids for CVE-2021-3499
-
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.Assigned by:
- nvd@nist.gov (Secondary)
- secalert@redhat.com (Primary)
References for CVE-2021-3499
-
https://bugzilla.redhat.com/show_bug.cgi?id=1949188
1949188 – (CVE-2021-3499) CVE-2021-3499 openshift/ovn-kubernetes: Egress Firewall does not reliably apply firewall rulesIssue Tracking;Third Party Advisory
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