CVE-2021-3499
OVN Kubernetes DNS Egress Firewall Reliability Weakness
Description
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.
INFO
Published Date :
June 2, 2021, 4:15 p.m.
Last Modified :
Feb. 12, 2023, 11:41 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.4
Exploitability Score :
2.2
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-3499.
| URL | Resource |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1949188 | Issue Tracking Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-3499 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-3499 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Feb. 12, 2023
Action Type Old Value New Value Changed Description A vulnerability was found in OVN Kubernetes 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. 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. Removed CVSS V3.1 Red Hat, Inc. AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L Removed Reference https://access.redhat.com/errata/RHBA-2021:1550 [No Types Assigned] Removed Reference https://access.redhat.com/security/cve/CVE-2021-3499 [No Types Assigned] Added CWE Red Hat, Inc. CWE-863 -
CVE Modified by [email protected]
Feb. 02, 2023
Action Type Old Value New Value Changed Description 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. A vulnerability was found in OVN Kubernetes 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. Added CVSS V3.1 Red Hat, Inc. AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L Added Reference https://access.redhat.com/errata/RHBA-2021:1550 [No Types Assigned] Added Reference https://access.redhat.com/security/cve/CVE-2021-3499 [No Types Assigned] Removed CWE Red Hat, Inc. CWE-863 -
Reanalysis by [email protected]
Oct. 27, 2022
Action Type Old Value New Value Added CWE NIST CWE-863 -
Reanalysis by [email protected]
Jun. 15, 2021
Action Type Old Value New Value Removed CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P) Removed CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L -
Initial Analysis by [email protected]
Jun. 14, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1949188 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1949188 Issue Tracking, Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:ovn:ovn-kubernetes:*:*:*:*:*:*:*:* versions up to (including) 0.3.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-3499 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-3499
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.09 }} 0.01%
score
0.37785
percentile