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Mend.io Vulnerability Database

CVE-2021-44731

Date: February 16, 2022

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

Language: C

Severity Score

7.8

Related Resources (16)

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3QTBN7LLZISXIA4KU4UKDR27Q5PXDS2U/

Url: http://www.openwall.com/lists/oss-security/2022/11/30/2

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCGHG6LJAVJJ72TMART6A7N4Z6MSTGI7/

Url: https://nvd.nist.gov/vuln/detail/CVE-2021-44731

Url: https://www.debian.org/security/2022/dsa-5080

Url: http://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-Race-Condition.html

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2021-44731

Url: http://www.openwall.com/lists/oss-security/2022/02/23/1

Url: https://ubuntu.com/security/notices/USN-5292-1

Url: http://seclists.org/fulldisclosure/2022/Dec/4

Url: https://security-tracker.debian.org/tracker/CVE-2021-44731

Url: http://www.openwall.com/lists/oss-security/2022/02/23/2

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XCGHG6LJAVJJ72TMART6A7N4Z6MSTGI7/

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3QTBN7LLZISXIA4KU4UKDR27Q5PXDS2U/

Url: http://www.openwall.com/lists/oss-security/2022/02/18/2

Url: https://www.mend.io/vulnerability-database/CVE-2021-44731

Severity Score

7.8

Weakness Type (CWE)

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CWE-362

CVSS v3.1

Base Score:	7.8
Attack Vector (AV):	LOCAL
Attack Complexity (AC):	HIGH
Privileges Required (PR):	LOW
User Interaction (UI):	NONE
Scope (S):	CHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

CVSS v2

Base Score:	6.9
Access Vector (AV):	LOCAL
Access Complexity (AC):	MEDIUM
Authentication (AU):	NONE
Confidentiality (C):	COMPLETE
Integrity (I):	COMPLETE
Availability (A):	COMPLETE
Additional information:

Mend.io Vulnerability Database

We found results for “”

CVE-2021-44731

Date: February 16, 2022

Language: C

Severity Score

Related Resources (16)

Severity Score

Weakness Type (CWE)

CVSS v3.1

CVSS v2

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