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CVE-2021-44731 Detail

Description

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


Metrics

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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-Race-Condition.html Exploit  Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-Race-Condition.html Exploit  Third Party Advisory  VDB Entry 
http://seclists.org/fulldisclosure/2022/Dec/4 Exploit  Mailing List  Third Party Advisory 
http://seclists.org/fulldisclosure/2022/Dec/4 Exploit  Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2022/02/18/2 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2022/02/18/2 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2022/02/23/1 Exploit  Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2022/02/23/1 Exploit  Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2022/02/23/2 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2022/02/23/2 Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2022/11/30/2 Exploit  Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2022/11/30/2 Exploit  Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3QTBN7LLZISXIA4KU4UKDR27Q5PXDS2U/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3QTBN7LLZISXIA4KU4UKDR27Q5PXDS2U/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCGHG6LJAVJJ72TMART6A7N4Z6MSTGI7/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCGHG6LJAVJJ72TMART6A7N4Z6MSTGI7/
https://ubuntu.com/security/notices/USN-5292-1 Patch  Vendor Advisory 
https://ubuntu.com/security/notices/USN-5292-1 Patch  Vendor Advisory 
https://www.debian.org/security/2022/dsa-5080 Issue Tracking  Third Party Advisory 
https://www.debian.org/security/2022/dsa-5080 Issue Tracking  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') cwe source acceptance level NIST   Canonical Ltd.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

13 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-44731
NVD Published Date:
02/17/2022
NVD Last Modified:
11/21/2024
Source:
Canonical Ltd.