6.4 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
6.9 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
0.001 Low
EPSS
Percentile
26.4%
The cumulative Virtuozzo ReadyKernel patch was updated with a security fix. The patch applies to all supported kernels of Virtuozzo Hybrid Server 7.x.
Vulnerability id: CVE-2021-0920
[3.10.0-1127.8.2.vz7.151.14 to 3.10.0-1160.53.1.vz7.185.3] Potential use-after-free in the βrecvβ operation of UNIX domain sockets. Race condition between the garbage collector and the βrecvβ operation with MSG_PEEK flag was found in the implementation of UNIX domain sockets. It could result in use-after-free and could potentially allow a local attacker to escalate their privileges in the system.
access.redhat.com/security/cve/CVE-2021-0920
readykernel.com/patch/Virtuozzo-7/readykernel-patch-151.14-139.0-1.vl7/
readykernel.com/patch/Virtuozzo-7/readykernel-patch-158.8-139.0-1.vl7/
readykernel.com/patch/Virtuozzo-7/readykernel-patch-163.46-139.0-1.vl7/
readykernel.com/patch/Virtuozzo-7/readykernel-patch-174.13-139.0-1.vl7/
readykernel.com/patch/Virtuozzo-7/readykernel-patch-183.5-139.0-1.vl7/
readykernel.com/patch/Virtuozzo-7/readykernel-patch-185.3-139.0-1.vl7/
6.4 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
6.9 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
0.001 Low
EPSS
Percentile
26.4%