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Ubuntu.comUB:CVE-2020-27067

HistoryDec 15, 2020 - 12:00 a.m.

CVE-2020-27067

2020-12-1500:00:00

ubuntu.com

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

4.4 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.0004 Low

EPSS

Percentile

5.3%

JSON

In the l2tp subsystem, there is a possible use after free due to a race
condition. This could lead to local escalation of privilege with System
execution privileges needed. User interaction is not needed for
exploitation.Product: AndroidVersions: Android kernelAndroid ID:
A-152409173

Notes

Author	Note
sbeattie	see salsa link for 4.9 stable commits.

OSVersionArchitecturePackageVersionFilename
ubuntu16.04noarchlinux< 4.4.0-186.216UNKNOWN
ubuntu16.04noarchlinux-aws< 4.4.0-1111.123UNKNOWN
ubuntu16.04noarchlinux-azure< 4.15.0-1013.13~16.04.2UNKNOWN
ubuntu16.04noarchlinux-gcp< 4.15.0-1014.14~16.04.1UNKNOWN
ubuntu16.04noarchlinux-hwe< 4.15.0-24.26~16.04.1UNKNOWN
ubuntu16.04noarchlinux-kvm< 4.4.0-1077.84UNKNOWN
ubuntu16.04noarchlinux-raspi2< 4.4.0-1136.145UNKNOWN
ubuntu18.04noarchlinux-snapdragon< 4.15.0-1053.57UNKNOWN
ubuntu16.04noarchlinux-snapdragon< 4.4.0-1140.148UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	16.04	noarch	linux	< 4.4.0-186.216	UNKNOWN
ubuntu	16.04	noarch	linux-aws	< 4.4.0-1111.123	UNKNOWN
ubuntu	16.04	noarch	linux-azure	< 4.15.0-1013.13~16.04.2	UNKNOWN
ubuntu	16.04	noarch	linux-gcp	< 4.15.0-1014.14~16.04.1	UNKNOWN
ubuntu	16.04	noarch	linux-hwe	< 4.15.0-24.26~16.04.1	UNKNOWN
ubuntu	16.04	noarch	linux-kvm	< 4.4.0-1077.84	UNKNOWN
ubuntu	16.04	noarch	linux-raspi2	< 4.4.0-1136.145	UNKNOWN
ubuntu	18.04	noarch	linux-snapdragon	< 4.15.0-1053.57	UNKNOWN
ubuntu	16.04	noarch	linux-snapdragon	< 4.4.0-1140.148	UNKNOWN

References

launchpad.net/bugs/cve/CVE-2020-27067

nvd.nist.gov/vuln/detail/CVE-2020-27067

salsa.debian.org/kernel-team/kernel-sec/-/blob/master/retired/CVE-2020-27067

security-tracker.debian.org/tracker/CVE-2020-27067

source.android.com/security/bulletin/pixel/2020-12-01

www.cve.org/CVERecord?id=CVE-2020-27067

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

4.4 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.0004 Low

EPSS

Percentile

5.3%

JSON

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