Security restrictions bypass in OVN Kubernetes
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-3499 |
| CWE-ID | CWE-285 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
OVN Kubernetes Server applications / Other server solutions |
| Vendor | Open Virtual Network |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Improper Authorization
EUVDB-ID: #VU54393
Risk: Medium
CVSSv3.1: 4.9 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-3499
CWE-ID:
CWE-285 - Improper Authorization
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to restricted resources.
The vulnerability exists in OVN Kubernetes where the Egress Firewall does not reliably apply firewall rules when there is multiple DNS rules. A remote attacker can gain unauthorized access to the protected system.
Install updates from vendor's website.
Vulnerable software versionsOVN Kubernetes: 0.1.0 - 0.3.0
External linkshttp://bugzilla.redhat.com/show_bug.cgi?id=1949188
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
