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virtuozzoVirtuozzoVZA-2021-037
HistoryJul 22, 2021 - 12:00 a.m.

[Important] [Security] Virtuozzo ReadyKernel patch 130.0 for Virtuozzo Hybrid Server 7.0, 7.5 and Virtuozzo Hybrid Infrastructure 3.5, 4.0, 4.5, 4.6

2021-07-2200:00:00
help.virtuozzo.com
39

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.002 Low

EPSS

Percentile

55.7%

JSON

The cumulative Virtuozzo ReadyKernel patch was updated with a security fix. The patch applies to all supported kernels of Virtuozzo Hybrid Server 7 and Virtuozzo Hybrid Infrastructure.
Vulnerability id: CVE-2021-33909
[3.10.0-1062.4.2.vz7.116.7 to 3.10.0-1160.21.1.vz7.174.13] size_t-to-int conversion vulnerability in the filesystem layer. It was discovered that the implementation of seq_file files in the Linux kernel contained an error related to integer conversion (size_t to a signed integer). A local unprivileged attacker could use this to cause a denial of service (system crash) or execute arbitrary code.

OSVersionArchitecturePackageVersionFilename
Virtuozzo Hybrid Infrastructure3.5x86_64readykernel-patch-116.7< 130.0-1.vl7readykernel-patch-116.7-130.0-1.vl7.x86_64.rpm
Virtuozzo Hybrid Infrastructure3.5x86_64readykernel-patch-131.10< 130.0-1.vl7readykernel-patch-131.10-130.0-1.vl7.x86_64.rpm
Virtuozzo Hybrid Infrastructure3.5x86_64readykernel-patch-151.14< 130.0-1.vl7readykernel-patch-151.14-130.0-1.vl7.x86_64.rpm
Virtuozzo Hybrid Infrastructure3.5x86_64readykernel-patch-158.8< 130.0-1.vl7readykernel-patch-158.8-130.0-1.vl7.x86_64.rpm
Virtuozzo Hybrid Infrastructure3.5x86_64readykernel-patch-163.46< 130.0-1.vl7readykernel-patch-163.46-130.0-1.vl7.x86_64.rpm
Virtuozzo Hybrid Infrastructure3.5x86_64readykernel-patch-174.13< 130.0-1.vl7readykernel-patch-174.13-130.0-1.vl7.x86_64.rpm
Virtuozzo Hybrid Infrastructure4.0x86_64readykernel-patch-116.7< 130.0-1.vl7readykernel-patch-116.7-130.0-1.vl7.x86_64.rpm
Virtuozzo Hybrid Infrastructure4.0x86_64readykernel-patch-131.10< 130.0-1.vl7readykernel-patch-131.10-130.0-1.vl7.x86_64.rpm
Virtuozzo Hybrid Infrastructure4.0x86_64readykernel-patch-151.14< 130.0-1.vl7readykernel-patch-151.14-130.0-1.vl7.x86_64.rpm
Virtuozzo Hybrid Infrastructure4.0x86_64readykernel-patch-158.8< 130.0-1.vl7readykernel-patch-158.8-130.0-1.vl7.x86_64.rpm
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7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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7.2 High

CVSS2

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Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

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Availability Impact

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

0.002 Low

EPSS

Percentile

55.7%

JSON
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