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[email protected]CVE-2021-43395

HistoryDec 26, 2022 - 6:15 a.m.

CVE-2021-43395

2022-12-2606:15:00

CWE-667

[email protected]

web.nvd.nist.gov

illumos

omnios

openindiana

smartos

solaris

local user

privilege escalation

filesystem manipulation

cve-2021-43395

nvd

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

6.6 Medium

AI Score

Confidence

Low

1.7 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.0005 Low

EPSS

Percentile

16.2%

JSON

An issue was discovered in illumos before f859e7171bb5db34321e45585839c6c3200ebb90, OmniOS Community Edition r151038, OpenIndiana Hipster 2021.04, and SmartOS 20210923. A local unprivileged user can cause a deadlock and kernel panic via crafted rename and rmdir calls on tmpfs filesystems. Oracle Solaris 10 and 11 is also affected.

CPENameOperatorVersion
illumos:illumosillumoslt2022-01-18
omniosce:omniosomniosce omnioseqr151038
openindiana:openindianaopenindianaeqhipster_2021.04
joyent:smartosjoyent smartoseq20210923
oracle:solarisoracle solariseq11
oracle:solarisoracle solariseq10

CPE	Name	Operator	Version
illumos:illumos	illumos	lt	2022-01-18
omniosce:omnios	omniosce omnios	eq	r151038
openindiana:openindiana	openindiana	eq	hipster_2021.04
joyent:smartos	joyent smartos	eq	20210923
oracle:solaris	oracle solaris	eq	11
oracle:solaris	oracle solaris	eq	10

References

www.tribblix.org/relnotes.html

github.com/illumos/illumos-gate/blob/069654420de4aade43c63c43cd2896e66945fc8a/usr/src/uts/common/fs/tmpfs/tmp_vnops.c

github.com/illumos/illumos-gate/blob/b3403853e80914bd0aade9b5b605da4878078173/usr/src/uts/common/fs/tmpfs/tmp_dir.c

github.com/illumos/illumos-gate/commit/f859e7171bb5db34321e45585839c6c3200ebb90

illumos.topicbox.com/groups/developer/T1c9e4f27f8c2f959/security-heads-up-illumos14424

jgardner100.wordpress.com/2022/01/20/security-heads-up/

kebe.com/blog/?p=505

www.illumos.org/issues/14424

www.oracle.com/security-alerts/cpujan2022.html

5.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

6.6 Medium

AI Score

Confidence

Low

1.7 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.0005 Low

EPSS

Percentile

16.2%

JSON

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