CVE-2021-44731
Snapd Privilege Escalation Race Condition Vulnerability
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
INFO
Published Date :
Feb. 17, 2022, 11:15 p.m.
Last Modified :
Nov. 7, 2023, 3:39 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
6.0
Exploitability Score :
1.1
Public PoC/Exploit Available at Github
CVE-2021-44731 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2021-44731
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-44731.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Local Privilege Escalation Exploit for CVE-2021-44731
Shell
工具书单
Perl Shell
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-44731 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-44731 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference Canonical Ltd. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3QTBN7LLZISXIA4KU4UKDR27Q5PXDS2U/ [No types assigned] Added Reference Canonical Ltd. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCGHG6LJAVJJ72TMART6A7N4Z6MSTGI7/ [No types assigned] Removed Reference Canonical Ltd. https://lists.fedoraproject.org/archives/list/[email protected]/message/XCGHG6LJAVJJ72TMART6A7N4Z6MSTGI7/ Removed Reference Canonical Ltd. https://lists.fedoraproject.org/archives/list/[email protected]/message/3QTBN7LLZISXIA4KU4UKDR27Q5PXDS2U/ -
Modified Analysis by [email protected]
Feb. 03, 2023
Action Type Old Value New Value Changed Reference Type http://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-Race-Condition.html No Types Assigned http://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-Race-Condition.html Exploit, Third Party Advisory, VDB Entry Changed Reference Type http://seclists.org/fulldisclosure/2022/Dec/4 No Types Assigned http://seclists.org/fulldisclosure/2022/Dec/4 Exploit, Mailing List, Third Party Advisory -
CVE Modified by [email protected]
Dec. 09, 2022
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-Race-Condition.html [No Types Assigned] -
CVE Modified by [email protected]
Dec. 09, 2022
Action Type Old Value New Value Added Reference http://seclists.org/fulldisclosure/2022/Dec/4 [No Types Assigned] -
Modified Analysis by [email protected]
Dec. 07, 2022
Action Type Old Value New Value Changed Reference Type http://www.openwall.com/lists/oss-security/2022/02/23/1 Mailing List, Third Party Advisory http://www.openwall.com/lists/oss-security/2022/02/23/1 Exploit, Mailing List, Third Party Advisory Changed Reference Type http://www.openwall.com/lists/oss-security/2022/11/30/2 No Types Assigned http://www.openwall.com/lists/oss-security/2022/11/30/2 Exploit, Mailing List, Third Party Advisory -
CVE Modified by [email protected]
Dec. 01, 2022
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2022/11/30/2 [No Types Assigned] -
Initial Analysis by [email protected]
Mar. 01, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:M/Au:N/C:C/I:C/A:C) Added CVSS V3.1 NIST AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H Changed Reference Type http://www.openwall.com/lists/oss-security/2022/02/18/2 No Types Assigned http://www.openwall.com/lists/oss-security/2022/02/18/2 Mailing List, Third Party Advisory Changed Reference Type http://www.openwall.com/lists/oss-security/2022/02/23/1 No Types Assigned http://www.openwall.com/lists/oss-security/2022/02/23/1 Mailing List, Third Party Advisory Changed Reference Type http://www.openwall.com/lists/oss-security/2022/02/23/2 No Types Assigned http://www.openwall.com/lists/oss-security/2022/02/23/2 Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/3QTBN7LLZISXIA4KU4UKDR27Q5PXDS2U/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/3QTBN7LLZISXIA4KU4UKDR27Q5PXDS2U/ Mailing List, Third Party Advisory Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/XCGHG6LJAVJJ72TMART6A7N4Z6MSTGI7/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/XCGHG6LJAVJJ72TMART6A7N4Z6MSTGI7/ Mailing List, Third Party Advisory Changed Reference Type https://ubuntu.com/security/notices/USN-5292-1 No Types Assigned https://ubuntu.com/security/notices/USN-5292-1 Patch, Vendor Advisory Changed Reference Type https://www.debian.org/security/2022/dsa-5080 No Types Assigned https://www.debian.org/security/2022/dsa-5080 Issue Tracking, Third Party Advisory Added CWE NIST CWE-362 Added CPE Configuration OR *cpe:2.3:a:canonical:snapd:*:*:*:*:*:*:*:* versions up to (including) 2.54.2 Added CPE Configuration 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:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Feb. 24, 2022
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2022/02/23/2 [No Types Assigned] Added Reference http://www.openwall.com/lists/oss-security/2022/02/23/1 [No Types Assigned] -
CVE Modified by [email protected]
Feb. 21, 2022
Action Type Old Value New Value Added Reference https://www.debian.org/security/2022/dsa-5080 [No Types Assigned] -
CVE Modified by [email protected]
Feb. 20, 2022
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/XCGHG6LJAVJJ72TMART6A7N4Z6MSTGI7/ [No Types Assigned] Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/3QTBN7LLZISXIA4KU4UKDR27Q5PXDS2U/ [No Types Assigned] -
CVE Modified by [email protected]
Feb. 18, 2022
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2022/02/18/2 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-44731 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-44731
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.05 }} 0.00%
score
0.14369
percentile