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nvd[email protected]NVD:CVE-2021-23133
HistoryApr 22, 2021 - 6:15 p.m.

CVE-2021-23133

2021-04-2218:15:08
CWE-362
web.nvd.nist.gov
1

CVSS2

6.9

Attack Vector

LOCAL

Attack 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

CVSS3

7

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

EPSS

0.001

Percentile

33.3%

A race condition in Linux kernel SCTP sockets (net/sctp/socket.c) before 5.12-rc8 can lead to kernel privilege escalation from the context of a network service or an unprivileged process. If sctp_destroy_sock is called without sock_net(sk)->sctp.addr_wq_lock then an element is removed from the auto_asconf_splist list without any proper locking. This can be exploited by an attacker with network service privileges to escalate to root or from the context of an unprivileged user directly if a BPF_CGROUP_INET_SOCK_CREATE is attached which denies creation of some SCTP socket.

Affected configurations

NVD
Node
linuxlinux_kernelRange4.104.14.232
OR
linuxlinux_kernelRange4.154.19.189
OR
linuxlinux_kernelRange4.205.4.114
OR
linuxlinux_kernelRange5.55.10.32
OR
linuxlinux_kernelRange5.115.11.16
Node
fedoraprojectfedoraMatch32
OR
fedoraprojectfedoraMatch33
OR
fedoraprojectfedoraMatch34
Node
debiandebian_linuxMatch9.0
Node
netappcloud_backupMatch-
OR
netappsolidfire_\&_hci_management_nodeMatch-
Node
broadcombrocade_fabric_operating_systemMatch-
Node
netapph410cMatch-
AND
netapph410c_firmwareMatch-
Node
netapph300sMatch-
AND
netapph300s_firmwareMatch-
Node
netapph500sMatch-
AND
netapph500s_firmwareMatch-
Node
netapph700sMatch-
AND
netapph700s_firmwareMatch-
Node
netapph300eMatch-
AND
netapph300e_firmwareMatch-
Node
netapph500eMatch-
AND
netapph500e_firmwareMatch-
Node
netapph700eMatch-
AND
netapph700e_firmwareMatch-
Node
netapph410s_firmwareMatch-
AND
netapph410sMatch-
Node
netappsolidfire_baseboard_management_controller_firmwareMatch-
AND
netappsolidfire_baseboard_management_controllerMatch-

References

CVSS2

6.9

Attack Vector

LOCAL

Attack 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

CVSS3

7

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

EPSS

0.001

Percentile

33.3%