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redhatcveRedhat.comRH:CVE-2021-39636
HistoryMar 25, 2022 - 6:26 p.m.

CVE-2021-39636

2022-03-2518:26:35
redhat.com
access.redhat.com
8

4.4 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

2.1 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

0.0004 Low

EPSS

Percentile

5.3%

A vulnerability was found in the Linux kernel’s net/ipv6/netfilter/ip6_tables.c:copy_entries_to_user function. This flaw allows a local attacker to leak internal kernel information.

Mitigation

To mitigate this issue, prevent the module ip6_tables from being loaded.

Please see <https://access.redhat.com/solutions/41278&gt;

for information on how to blacklist a kernel module to prevent it from loading automatically.

4.4 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

2.1 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

0.0004 Low

EPSS

Percentile

5.3%