CVE-2021-44731

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-44731
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

7.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.1 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

6.9 /10

CVSS v2.0 : MEDIUM

V2 Legend

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

Exploitability : 3.4 / Impact : 10.0

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References
Link Resource
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://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/2022/02/23/2 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/XCGHG6LJAVJJ72TMART6A7N4Z6MSTGI7/
https://ubuntu.com/security/notices/USN-5292-1 Patch Vendor Advisory
https://www.debian.org/security/2022/dsa-5080 Issue Tracking Third Party Advisory
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://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/2022/02/23/2 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/XCGHG6LJAVJJ72TMART6A7N4Z6MSTGI7/
https://ubuntu.com/security/notices/USN-5292-1 Patch Vendor Advisory
https://www.debian.org/security/2022/dsa-5080 Issue Tracking Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:canonical:snapd:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:21.10:*:*:*:*:*:*:*

Configuration 3 (hide)

OR cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

Configuration 4 (hide)

OR cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
History

21 Nov 2024, 06:31

Type Values Removed Values Added
References () 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
References () 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
References () 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
References () 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
References () 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
References () 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
References () 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/ -
References () 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/ -
References () https://ubuntu.com/security/notices/USN-5292-1 - Patch, Vendor Advisory () https://ubuntu.com/security/notices/USN-5292-1 - Patch, Vendor Advisory
References () 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

01 Dec 2022, 01:15

Type Values Removed Values Added
References
  • (MLIST) http://www.openwall.com/lists/oss-security/2022/11/30/2 -

01 Mar 2022, 16:56

Type Values Removed Values Added
CPE cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
cpe:2.3:a:canonical:snapd:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:21.10:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
References (MISC) https://ubuntu.com/security/notices/USN-5292-1 - (MISC) https://ubuntu.com/security/notices/USN-5292-1 - Patch, Vendor Advisory
References (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XCGHG6LJAVJJ72TMART6A7N4Z6MSTGI7/ - (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XCGHG6LJAVJJ72TMART6A7N4Z6MSTGI7/ - Mailing List, Third Party Advisory
References (MLIST) http://www.openwall.com/lists/oss-security/2022/02/23/2 - (MLIST) http://www.openwall.com/lists/oss-security/2022/02/23/2 - Mailing List, Third Party Advisory
References (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3QTBN7LLZISXIA4KU4UKDR27Q5PXDS2U/ - (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3QTBN7LLZISXIA4KU4UKDR27Q5PXDS2U/ - Mailing List, Third Party Advisory
References (MLIST) http://www.openwall.com/lists/oss-security/2022/02/18/2 - (MLIST) http://www.openwall.com/lists/oss-security/2022/02/18/2 - Mailing List, Third Party Advisory
References (MLIST) http://www.openwall.com/lists/oss-security/2022/02/23/1 - (MLIST) http://www.openwall.com/lists/oss-security/2022/02/23/1 - Mailing List, Third Party Advisory
References (DEBIAN) https://www.debian.org/security/2022/dsa-5080 - (DEBIAN) https://www.debian.org/security/2022/dsa-5080 - Issue Tracking, Third Party Advisory
CWE CWE-362
CVSS v2 : unknown
v3 : unknown 		v2 : 6.9
v3 : 7.8

24 Feb 2022, 15:15

Type Values Removed Values Added
References
  • (MLIST) http://www.openwall.com/lists/oss-security/2022/02/23/1 -
  • (MLIST) http://www.openwall.com/lists/oss-security/2022/02/23/2 -

21 Feb 2022, 11:15

Type Values Removed Values Added
References
  • (DEBIAN) https://www.debian.org/security/2022/dsa-5080 -

20 Feb 2022, 03:15

Type Values Removed Values Added
References
  • (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3QTBN7LLZISXIA4KU4UKDR27Q5PXDS2U/ -
  • (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XCGHG6LJAVJJ72TMART6A7N4Z6MSTGI7/ -

18 Feb 2022, 10:15

Type Values Removed Values Added
References
  • (MLIST) http://www.openwall.com/lists/oss-security/2022/02/18/2 -

17 Feb 2022, 23:15

Type Values Removed Values Added
New CVE
Information

Published : 2022-02-17 23:15

Updated : 2024-11-21 06:31

NVD link : CVE-2021-44731

Mitre link : CVE-2021-44731

CVE.ORG link : CVE-2021-44731

JSON object : View

Products Affected

fedoraproject

  • fedora

debian

  • debian_linux

canonical

  • ubuntu_linux
  • snapd
CWE
CWE-362

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