Multiple vulnerabilities in Red Hat Virtualization
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2020-27827 CVE-2020-35498 |
| CWE-ID | CWE-401 CWE-20 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #2 is available. |
| Vulnerable software Subscribe |
ovn2.11 (Red Hat package) Operating systems & Components / Operating system package or component openvswitch2.11 (Red Hat package) Operating systems & Components / Operating system package or component Red Hat Virtualization for IBM Power LE Server applications / Virtualization software Red Hat Virtualization Server applications / Virtualization software |
| Vendor | Red Hat Inc. |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Memory leak
EUVDB-ID: #VU49910
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-2020-27827
CWE-ID:
CWE-401 - Missing release of memory after effective lifetime
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak in lldpd when processing packets with multiple instances of certain TLVs. A remote attacker can send specially crafted traffic to the system and perform a denial of service (DoS) attack.
Install updates from vendor's website.
ovn2.11 (Red Hat package): 2.11.1-44.el7fdp - 2.11.1-56.el7fdp
openvswitch2.11 (Red Hat package): 2.11.3-77.el7fdp
Red Hat Virtualization for IBM Power LE: 4
Red Hat Virtualization: 4
External linkshttp://access.redhat.com/errata/RHSA-2021:1050
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) Input validation error
EUVDB-ID: #VU50603
Risk: Medium
CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2020-35498
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input when processing network packets. A remote attacker can send specially crafted traffic to the system and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
ovn2.11 (Red Hat package): 2.11.1-44.el7fdp - 2.11.1-56.el7fdp
openvswitch2.11 (Red Hat package): 2.11.3-77.el7fdp
Red Hat Virtualization for IBM Power LE: 4
Red Hat Virtualization: 4
External linkshttp://access.redhat.com/errata/RHSA-2021:1050
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. However, proof of concept for this vulnerability is available.
