7.8

CVE-2021-44731

Exploit

snapd could be made to escalate privileges and run programs as administrator

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
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Canonical ≫ Snapd Version <= 2.54.2
Canonical ≫ Ubuntu Linux Version18.04 SwEditionlts
Canonical ≫ Ubuntu Linux Version20.04 SwEditionlts
Canonical ≫ Ubuntu Linux Version21.10
Fedoraproject ≫ Fedora Version34
Fedoraproject ≫ Fedora Version35
Debian ≫ Debian Linux Version10.0
Debian ≫ Debian Linux Version11.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.97% 0.579
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.1 6
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
nvd@nist.gov 6.9 3.4 10
AV:L/AC:M/Au:N/C:C/I:C/A:C
security@ubuntu.com 7.8 1.1 6
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

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