CVE-2021-3155

snapd 2.54.2 and earlier created ~/snap directories in user home directories without specifying owner-only permissions. This could allow a local attacker to read information that should have been private. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1

CVSS v3.0 5.5 MEDIUM
CVSS v2.0 2.1 LOW

5.5^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

2.1^/10

CVSS v2.0 : LOW

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

Exploitability : 3.9 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://github.com/snapcore/snapd/commit/6bcaeeccd16ed8298a301dd92f6907f88c24cc85	Patch Third Party Advisory
https://ubuntu.com/security/notices/USN-5292-1	Patch Vendor Advisory
https://github.com/snapcore/snapd/commit/7d2a966620002149891446a53cf114804808dcca	Patch Third Party Advisory

Advertisement

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:::::::*

Information

Published : 2022-02-17 15:15

Updated : 2022-02-25 13:32

NVD link : CVE-2021-3155

Mitre link : CVE-2021-3155

JSON object : View

CWE

CWE-276

Incorrect Default Permissions

Advertisement

Products Affected

canonical

ubuntu_linux
snapd

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://github.com/snapcore/snapd/commit/6bcaeeccd16ed8298a301dd92f6907f88c24cc85", "name": "https://github.com/snapcore/snapd/commit/6bcaeeccd16ed8298a301dd92f6907f88c24cc85", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://ubuntu.com/security/notices/USN-5292-1", "name": "https://ubuntu.com/security/notices/USN-5292-1", "tags": ["Patch", "Vendor Advisory"], "refsource": "MISC"}, {"url": "https://github.com/snapcore/snapd/commit/7d2a966620002149891446a53cf114804808dcca", "name": "https://github.com/snapcore/snapd/commit/7d2a966620002149891446a53cf114804808dcca", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "snapd 2.54.2 and earlier created ~/snap directories in user home directories without specifying owner-only permissions. This could allow a local attacker to read information that should have been private. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1"}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-276"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-3155", "ASSIGNER": "security@ubuntu.com"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 2.1, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "severity": "LOW", "acInsufInfo": false, "impactScore": 2.9, "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 1.8}}, "publishedDate": "2022-02-17T23:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:canonical:snapd:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "2.54.3"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:21.10:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2022-02-25T21:32Z"}