CVE-2015-8620 - Vulnerability Details - OpenCVE

Heap-based buffer overflow in the Avast virtualization driver (aswSnx.sys) in Avast Internet Security, Pro Antivirus, Premier, and Free Antivirus before 11.1.2253 allows local users to gain privileges via a Unicode file path in an IOCTL request.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Local

Access Complexity Low

Authentication None

Confidentiality Impact Complete

Integrity Impact Complete

Availability Impact Complete

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Vendors	Products
Avast	Avast Free Antivirus Avast Internet Security Avast Premier Avast Pro Antivirus

Configuration 1 [-]

OR	cpe:2.3:a:avast:avast_free_antivirus::::::::
	cpe:2.3:a:avast:avast_internet_security::::::::
	cpe:2.3:a:avast:avast_premier::::::::
	cpe:2.3:a:avast:avast_pro_antivirus::::::::

No data.

References

Link	Providers
http://packetstormsecurity.com/files/135859/Avast-11.1.2245-Heap-Overflow.html
http://seclists.org/fulldisclosure/2016/Feb/94
http://www.securitytracker.com/id/1035093
https://www.nettitude.co.uk/exploiting-a-kernel-paged-pool-buffer-overflow-in-avast-virtualization-driver/

History

No history.

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2016-04-13T14:00:00

Updated: 2024-08-06T08:20:43.430Z

Reserved: 2015-12-23T00:00:00

Link: CVE-2015-8620

Vulnrichment

No data.

NVD

Status : Deferred

Published: 2016-04-13T14:59:03.437

Modified: 2025-04-12T10:46:40.837

Link: CVE-2015-8620

Redhat

No data.

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "datePublic": "2016-02-17T00:00:00", "descriptions": [{"lang": "en", "value": "Heap-based buffer overflow in the Avast virtualization driver (aswSnx.sys) in Avast Internet Security, Pro Antivirus, Premier, and Free Antivirus before 11.1.2253 allows local users to gain privileges via a Unicode file path in an IOCTL request."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2016-04-13T13:57:01", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "http://packetstormsecurity.com/files/135859/Avast-11.1.2245-Heap-Overflow.html"}, {"name": "20160222 Avast Virtualization Driver - Elevation Of Privileges", "tags": ["mailing-list", "x_refsource_FULLDISC"], "url": "http://seclists.org/fulldisclosure/2016/Feb/94"}, {"tags": ["x_refsource_MISC"], "url": "https://www.nettitude.co.uk/exploiting-a-kernel-paged-pool-buffer-overflow-in-avast-virtualization-driver/"}, {"name": "1035093", "tags": ["vdb-entry", "x_refsource_SECTRACK"], "url": "http://www.securitytracker.com/id/1035093"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2015-8620", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Heap-based buffer overflow in the Avast virtualization driver (aswSnx.sys) in Avast Internet Security, Pro Antivirus, Premier, and Free Antivirus before 11.1.2253 allows local users to gain privileges via a Unicode file path in an IOCTL request."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "http://packetstormsecurity.com/files/135859/Avast-11.1.2245-Heap-Overflow.html", "refsource": "MISC", "url": "http://packetstormsecurity.com/files/135859/Avast-11.1.2245-Heap-Overflow.html"}, {"name": "20160222 Avast Virtualization Driver - Elevation Of Privileges", "refsource": "FULLDISC", "url": "http://seclists.org/fulldisclosure/2016/Feb/94"}, {"name": "https://www.nettitude.co.uk/exploiting-a-kernel-paged-pool-buffer-overflow-in-avast-virtualization-driver/", "refsource": "MISC", "url": "https://www.nettitude.co.uk/exploiting-a-kernel-paged-pool-buffer-overflow-in-avast-virtualization-driver/"}, {"name": "1035093", "refsource": "SECTRACK", "url": "http://www.securitytracker.com/id/1035093"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-06T08:20:43.430Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "http://packetstormsecurity.com/files/135859/Avast-11.1.2245-Heap-Overflow.html"}, {"name": "20160222 Avast Virtualization Driver - Elevation Of Privileges", "tags": ["mailing-list", "x_refsource_FULLDISC", "x_transferred"], "url": "http://seclists.org/fulldisclosure/2016/Feb/94"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.nettitude.co.uk/exploiting-a-kernel-paged-pool-buffer-overflow-in-avast-virtualization-driver/"}, {"name": "1035093", "tags": ["vdb-entry", "x_refsource_SECTRACK", "x_transferred"], "url": "http://www.securitytracker.com/id/1035093"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2015-8620", "datePublished": "2016-04-13T14:00:00", "dateReserved": "2015-12-23T00:00:00", "dateUpdated": "2024-08-06T08:20:43.430Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:avast:avast_free_antivirus:*:*:*:*:*:*:*:*", "matchCriteriaId": "98114D98-B923-4D1C-97F2-89CAAF21214E", "versionEndIncluding": "11.1.2245", "vulnerable": true}, {"criteria": "cpe:2.3:a:avast:avast_internet_security:*:*:*:*:*:*:*:*", "matchCriteriaId": "333F54CD-DEFF-4EB8-8062-F8E7CEFB3E82", "versionEndIncluding": "11.1.2245", "vulnerable": true}, {"criteria": "cpe:2.3:a:avast:avast_premier:*:*:*:*:*:*:*:*", "matchCriteriaId": "C749D4B9-46D1-45FF-A3F0-0CC272FD904E", "versionEndIncluding": "11.1.2245", "vulnerable": true}, {"criteria": "cpe:2.3:a:avast:avast_pro_antivirus:*:*:*:*:*:*:*:*", "matchCriteriaId": "86CF89C2-F55D-42B4-8154-D22EC7BF463B", "versionEndIncluding": "11.1.2245", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Heap-based buffer overflow in the Avast virtualization driver (aswSnx.sys) in Avast Internet Security, Pro Antivirus, Premier, and Free Antivirus before 11.1.2253 allows local users to gain privileges via a Unicode file path in an IOCTL request."}, {"lang": "es", "value": "Desbordamiento de buffer basado en memoria din\u00e1mica en el controlador de virtualizaci\u00f3n de Avast (aswSnx.sys) en Avast Internet Security, Pro Antivirus, Premier y Free Antivirus en versiones anteriores a 11.1.2253 permite a usuarios locales obtener privilegios a trav\u00e9s de una ruta de archivo Unicode en una petici\u00f3n IOCTL."}], "id": "CVE-2015-8620", "lastModified": "2025-04-12T10:46:40.837", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 7.2, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2016-04-13T14:59:03.437", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/135859/Avast-11.1.2245-Heap-Overflow.html"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "url": "http://seclists.org/fulldisclosure/2016/Feb/94"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securitytracker.com/id/1035093"}, {"source": "cve@mitre.org", "tags": ["Exploit"], "url": "https://www.nettitude.co.uk/exploiting-a-kernel-paged-pool-buffer-overflow-in-avast-virtualization-driver/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/135859/Avast-11.1.2245-Heap-Overflow.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "url": "http://seclists.org/fulldisclosure/2016/Feb/94"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securitytracker.com/id/1035093"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit"], "url": "https://www.nettitude.co.uk/exploiting-a-kernel-paged-pool-buffer-overflow-in-avast-virtualization-driver/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}], "source": "nvd@nist.gov", "type": "Primary"}]}