Ubuntu update for openvswitch
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2023-3966 CVE-2023-5366 |
| CWE-ID | CWE-125 CWE-345 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Ubuntu Operating systems & Components / Operating system python3-openvswitch (Ubuntu package) Operating systems & Components / Operating system package or component openvswitch-common (Ubuntu package) Operating systems & Components / Operating system package or component |
| Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Out-of-bounds read
EUVDB-ID: #VU86295
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-3966
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition when handling Geneve packets. A remote attacker can send specially crafted Geneve packets with HF offload to the system, trigger an out-of-bounds read error and perform a denial of service (DoS) attack.
Update the affected package openvswitch to the latest version.
Vulnerable software versionsUbuntu: 20.04 - 23.10
python3-openvswitch (Ubuntu package): before 3.2.2-0ubuntu0.23.10.1
openvswitch-common (Ubuntu package): before 3.2.2-0ubuntu0.23.10.1
External linkshttp://ubuntu.com/security/notices/USN-6690-1
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.
2) Insufficient verification of data authenticity
EUVDB-ID: #VU83434
Risk: Low
CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-5366
CWE-ID:
CWE-345 - Insufficient Verification of Data Authenticity
Exploit availability: No
DescriptionThe vulnerability allows a local user to bypass implemented security restrictions.
The vulnerability exists due to missing verification of data authenticity when handling ICMPv6 Neighbor Advertisement packets between virtual machines. A local user can bypass OpenFlow rules and send otherwise restricted packets.
Update the affected package openvswitch to the latest version.
Vulnerable software versionsUbuntu: 20.04 - 23.10
python3-openvswitch (Ubuntu package): before 3.2.2-0ubuntu0.23.10.1
openvswitch-common (Ubuntu package): before 3.2.2-0ubuntu0.23.10.1
External linkshttp://ubuntu.com/security/notices/USN-6690-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
