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nvd[email protected]NVD:CVE-2021-43057
HistoryOct 28, 2021 - 4:15 a.m.

CVE-2021-43057

2021-10-2804:15:08
CWE-416
web.nvd.nist.gov
8
linux kernel
use-after-free
selinux
local attackers
memory corruption
escalate privileges
cid-a3727a8bac0a

CVSS2

7.2

Attack Vector

LOCAL

Attack 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

CVSS3

7.8

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

EPSS

0

Percentile

5.1%

An issue was discovered in the Linux kernel before 5.14.8. A use-after-free in selinux_ptrace_traceme (aka the SELinux handler for PTRACE_TRACEME) could be used by local attackers to cause memory corruption and escalate privileges, aka CID-a3727a8bac0a. This occurs because of an attempt to access the subjective credentials of another task.

Affected configurations

Nvd
Node
linuxlinux_kernelRange5.135.14.8
Node
netapph300s_firmwareMatch-
AND
netapph300sMatch-
Node
netapph500s_firmwareMatch-
AND
netapph500sMatch-
Node
netapph700s_firmwareMatch-
AND
netapph700sMatch-
Node
netapph300e_firmwareMatch-
AND
netapph300eMatch-
Node
netapph500e_firmwareMatch-
AND
netapph500eMatch-
Node
netapph700e_firmwareMatch-
AND
netapph700eMatch-
Node
netapph410s_firmwareMatch-
AND
netapph410sMatch-
Node
netapph410c_firmwareMatch-
AND
netapph410cMatch-

CVSS2

7.2

Attack Vector

LOCAL

Attack 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

CVSS3

7.8

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

EPSS

0

Percentile

5.1%