CVE-2021-3155

2021-01-1300:00:00

ubuntu.com

snapd

vulnerability

insecure

directories

permissions

information

private

fixed

CVSS2

2.1

Attack Vector

LOCAL

Attack 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

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

EPSS

Percentile

5.1%

JSON

snapd 2.54.2 and earlier created ~/snap directories in user home
directories without specifying owner-only permissions. This could allow a
local attacker to read information that should have been private. Fixed in
snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1

Bugs

<https://bugs.launchpad.net/bugs/1910298>

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchsnapd< 2.54.3+18.04UNKNOWN
ubuntu20.04noarchsnapd< 2.54.3+20.04UNKNOWN
ubuntu21.10noarchsnapd< 2.54.3+21.10.1UNKNOWN
ubuntu14.04noarchsnapd< 2.54.3+14.04~esm1UNKNOWN
ubuntu16.04noarchsnapd< 2.54.3+16.04~esm2UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	snapd	< 2.54.3+18.04	UNKNOWN
ubuntu	20.04	noarch	snapd	< 2.54.3+20.04	UNKNOWN
ubuntu	21.10	noarch	snapd	< 2.54.3+21.10.1	UNKNOWN
ubuntu	14.04	noarch	snapd	< 2.54.3+14.04~esm1	UNKNOWN
ubuntu	16.04	noarch	snapd	< 2.54.3+16.04~esm2	UNKNOWN