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virtuozzoVirtuozzoVZA-2020-061
HistorySep 18, 2020 - 12:00 a.m.

Kernel security update: Virtuozzo ReadyKernel patch 116.0 for Virtuozzo Hybrid Server 7.0, Virtuozzo Infrastructure Platform 2.5, 3.0, and Virtuozzo Hybrid Infrastructure 3.5

2020-09-1800:00:00
help.virtuozzo.com
43

4.7 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:L/AC:M/Au:N/C:N/I:N/A:C

7 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

0.0004 Low

EPSS

Percentile

14.2%

The cumulative Virtuozzo ReadyKernel patch was updated with security fixes. The patch applies to all supported kernels of Virtuozzo Hybrid Server, Virtuozzo Infrastructure Platform, and Virtuozzo Hybrid Infrastructure.
Vulnerability id: CVE-2020-25212
[3.10.0-862.20.2.vz7.73.29 to 3.10.0-1127.8.2.vz7.151.14] NFS v4: potential memory corruption on the client system when processing security attributes. It was discovered that a buffer overflow and memory corruption were possible if a system tried to mount an NFS v4 share where the files had security labels in the file attributes. An attacker would need to control the NFS server and make it send a specific series of responses to trigger the issue. The issue allows the attacker to crash the kernel on the client system or, potentially, escalate their privileges there.

Vulnerability id: CVE-2020-25211
[3.10.0-862.20.2.vz7.73.29 to 3.10.0-1127.8.2.vz7.151.14] netfilter: kernel crash due to a buffer overflow in ctnetlink_parse_tuple_filter(). It was discovered that a local attacker could pass a specially crafted configuration of conntrack to the kernel to cause a buffer overflow in ctnetlink_parse_tuple_filter() function. As a result, the kernel could crash.

Vulnerability id: CVE-2020-14385
[3.10.0-1127.8.2.vz7.151.14] The metadata validator in XFS may flag an inode with a valid extended attribute as corrupt. A failure of the file system metadata validator in XFS can cause an inode with a valid, user-creatable extended attribute to be flagged as corrupt. This can lead to the filesystem being shutdown, or otherwise rendered inaccessible until it is remounted, leading to a denial of service.

4.7 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:L/AC:M/Au:N/C:N/I:N/A:C

7 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

0.0004 Low

EPSS

Percentile

14.2%