CVE-2020-35517

A flaw was found in qemu. A host privilege escalation issue was found in the virtio-fs shared file system daemon where a privileged guest user is able to create a device special file in the shared directory and use it to r/w access host devices.

CVSS v3.0 8.2 HIGH
CVSS v2.0 4.6 MEDIUM

8.2^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 1.5 / Impact : 6.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

4.6^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 3.9 / Impact : 6.4

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1915823	Issue Tracking Patch Third Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg05461.html	Exploit Mailing List Patch Third Party Advisory
https://www.openwall.com/lists/oss-security/2021/01/22/1	Exploit Mailing List Patch Third Party Advisory
https://github.com/qemu/qemu/commit/ebf101955ce8f8d72fba103b5151115a4335de2c	Patch Third Party Advisory
https://security.netapp.com/advisory/ntap-20210312-0002/	Third Party Advisory
https://security.gentoo.org/glsa/202208-27	Third Party Advisory

Advertisement

Configurations

Configuration 1 (hide)

cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*

Information

Published : 2021-01-28 12:15

Updated : 2023-02-12 15:41

NVD link : CVE-2020-35517

Mitre link : CVE-2020-35517

JSON object : View

CWE

CWE-269

Improper Privilege Management

Advertisement

Products Affected

qemu

qemu

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1915823", "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1915823", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg05461.html", "name": "https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg05461.html", "tags": ["Exploit", "Mailing List", "Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://www.openwall.com/lists/oss-security/2021/01/22/1", "name": "https://www.openwall.com/lists/oss-security/2021/01/22/1", "tags": ["Exploit", "Mailing List", "Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://github.com/qemu/qemu/commit/ebf101955ce8f8d72fba103b5151115a4335de2c", "name": "https://github.com/qemu/qemu/commit/ebf101955ce8f8d72fba103b5151115a4335de2c", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://security.netapp.com/advisory/ntap-20210312-0002/", "name": "https://security.netapp.com/advisory/ntap-20210312-0002/", "tags": ["Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://security.gentoo.org/glsa/202208-27", "name": "GLSA-202208-27", "tags": ["Third Party Advisory"], "refsource": "GENTOO"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "A flaw was found in qemu. A host privilege escalation issue was found in the virtio-fs shared file system daemon where a privileged guest user is able to create a device special file in the shared directory and use it to r/w access host devices."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-269"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2020-35517", "ASSIGNER": "secalert@redhat.com"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 4.6, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 6.4, "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.2, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "HIGH"}, "impactScore": 6.0, "exploitabilityScore": 1.5}}, "publishedDate": "2021-01-28T20:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "5.2.50", "versionStartIncluding": "5.0.0"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2023-02-12T23:41Z"}