Red Hat update for Red Hat Virtualization



Published: 2020-11-24
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-1730
CWE-ID CWE-399
Exploitation vector Network
Public exploit N/A
Vulnerable software
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redhat-release-virtualization-host (Red Hat package)
Operating systems & Components / Operating system package or component

imgbased (Red Hat package)
Operating systems & Components / Operating system package or component

redhat-virtualization-host (Red Hat package)
Operating systems & Components / Operating system package or component

Red Hat Virtualization
Server applications / Virtualization software

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Resource management error

EUVDB-ID: #VU26756

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-2020-1730

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper resource management while cleaning the AES-CTR ciphers when closing the connection. A remote attacker can initiate a connection to the client and server that supports AES-CTR ciphers and close the connection before ciphers are initialized, triggering a denial of service condition (service crash). The vulnerability affects both client and server implementations.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

redhat-release-virtualization-host (Red Hat package): 4.4.2-1.el8ev

imgbased (Red Hat package): 1.2.12-0.1.el8ev

Red Hat Virtualization: 4

redhat-virtualization-host (Red Hat package): before 4.4.3-20201116.0.el8_3

External links

http://access.redhat.com/errata/RHSA-2020:5218


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.



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