8.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
6.9 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
0.0004 Low
EPSS
Percentile
5.3%
snapd 2.54.2 did not properly validate the location of the snap-confine
binary. A local attacker who can hardlink this binary to another location
to cause snap-confine to execute other arbitrary binaries 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
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | snapd | < 2.54.3+18.04 | UNKNOWN |
ubuntu | 20.04 | noarch | snapd | < 2.54.3+20.04 | UNKNOWN |
ubuntu | 21.10 | noarch | snapd | < 2.54.3+21.10.1 | UNKNOWN |
ubuntu | 14.04 | noarch | snapd | < 2.54.3+14.04~esm1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
ubuntu | 16.04 | noarch | snapd | < 2.54.3+16.04~esm2) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
github.com/snapcore/snapd/commit/f3f669d720ed8b0bcb73da7789843bf43b5c16cf
launchpad.net/bugs/cve/CVE-2021-44730
nvd.nist.gov/vuln/detail/CVE-2021-44730
security-tracker.debian.org/tracker/CVE-2021-44730
ubuntu.com/security/notices/USN-5292-1
www.cve.org/CVERecord?id=CVE-2021-44730
www.openwall.com/lists/oss-security/2022/02/17/2
8.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
6.9 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
0.0004 Low
EPSS
Percentile
5.3%