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[email protected]CVE-2021-44731

HistoryFeb 17, 2022 - 11:15 p.m.

CVE-2021-44731

2022-02-1723:15:07

CWE-362

[email protected]

web.nvd.nist.gov

179

cve-2021-44731

snapd

vulnerability

race condition

privilege escalation

nvd

6.9 Medium

CVSS2

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.4 High

AI Score

Confidence

High

0.0005 Low

EPSS

Percentile

17.4%

JSON

A race condition existed in the snapd 2.54.2 snap-confine binary when preparing a private mount namespace for a snap. This could allow a local attacker to gain root privileges by bind-mounting their own contents inside the snap’s private mount namespace and causing snap-confine to execute arbitrary code and hence gain privilege escalation. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1

Affected configurations

NVD

Node

canonicalsnapdRange≤2.54.2

Node

canonicalubuntu_linuxMatch18.04lts

canonicalubuntu_linuxMatch20.04lts

canonicalubuntu_linuxMatch21.10

Node

fedoraprojectfedoraMatch34

fedoraprojectfedoraMatch35

Node

debiandebian_linuxMatch10.0

debiandebian_linuxMatch11.0

CPENameOperatorVersion
canonical:snapdcanonical snapdle2.54.2

CPE	Name	Operator	Version
canonical:snapd	canonical snapd	le	2.54.2

CNA Affected

[
  {
    "vendor": "Canonical Ltd.",
    "product": "snapd",
    "versions": [
      {
        "version": "unspecified",
        "lessThanOrEqual": "2.54.2",
        "status": "affected",
        "versionType": "custom"
      }
    ]
  }
]