CVE-2016-9916

Memory leak in hw/9pfs/9p-proxy.c in QEMU (aka Quick Emulator) allows local privileged guest OS users to cause a denial of service (host memory consumption and possibly QEMU process crash) by leveraging a missing cleanup operation in the proxy backend.

CVSS v3 6.5 MEDIUM
CVSS v2.0 4.9 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.0 / Impact : 4.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope CHANGED

4.9^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 3.9 / Impact : 6.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References

Link	Resource
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=898ae90a44551d25b8e956fd87372d303c82fe68
http://www.openwall.com/lists/oss-security/2016/12/06/11	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/12/08/7	Mailing List Third Party Advisory
http://www.securityfocus.com/bid/94729	Third Party Advisory VDB Entry
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html	Third Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2016-11/msg03278.html	Patch Vendor Advisory
https://security.gentoo.org/glsa/201701-49	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:qemu:qemu::::::::
	cpe:2.3:a:qemu:qemu:2.8.0:rc0::::::
	cpe:2.3:a:qemu:qemu:2.8.0:rc1::::::

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

History

13 Feb 2023, 04:50

Type	Values Removed	Values Added
References	{'url': 'http://git.qemu.org/?p=qemu.git;a=commit;h=898ae90a44551d25b8e956fd87372d303c82fe68', 'name': 'http://git.qemu.org/?p=qemu.git;a=commit;h=898ae90a44551d25b8e956fd87372d303c82fe68', 'tags': ['Issue Tracking', 'Patch'], 'refsource': 'CONFIRM'}	(MISC) http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=898ae90a44551d25b8e956fd87372d303c82fe68 -

Information

Published : 2016-12-29 22:59

Updated : 2023-12-10 12:01

NVD link : CVE-2016-9916

Mitre link : CVE-2016-9916

CVE.ORG link : CVE-2016-9916

JSON object : View

Products Affected

debian

debian_linux

qemu

qemu

CWE

CWE-401

Missing Release of Memory after Effective Lifetime

{"id": "CVE-2016-9916", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.9, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "COMPLETE", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 6.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 4.0, "exploitabilityScore": 2.0}]}, "published": "2016-12-29T22:59:00.700", "references": [{"url": "http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=898ae90a44551d25b8e956fd87372d303c82fe68", "source": "secalert@redhat.com"}, {"url": "http://www.openwall.com/lists/oss-security/2016/12/06/11", "tags": ["Mailing List", "Third Party Advisory"], "source": "secalert@redhat.com"}, {"url": "http://www.openwall.com/lists/oss-security/2016/12/08/7", "tags": ["Mailing List", "Third Party Advisory"], "source": "secalert@redhat.com"}, {"url": "http://www.securityfocus.com/bid/94729", "tags": ["Third Party Advisory", "VDB Entry"], "source": "secalert@redhat.com"}, {"url": "https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html", "tags": ["Third Party Advisory"], "source": "secalert@redhat.com"}, {"url": "https://lists.gnu.org/archive/html/qemu-devel/2016-11/msg03278.html", "tags": ["Patch", "Vendor Advisory"], "source": "secalert@redhat.com"}, {"url": "https://security.gentoo.org/glsa/201701-49", "tags": ["Third Party Advisory"], "source": "secalert@redhat.com"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-401"}]}], "descriptions": [{"lang": "en", "value": "Memory leak in hw/9pfs/9p-proxy.c in QEMU (aka Quick Emulator) allows local privileged guest OS users to cause a denial of service (host memory consumption and possibly QEMU process crash) by leveraging a missing cleanup operation in the proxy backend."}, {"lang": "es", "value": "Fuga de memoria en hw/9pfs/9p-proxy.c en QEMU (tambi\u00e9n conocido como Quick Emulator) permite a usuarios privilegiados locales del SO hu\u00e9sped provocar una denegaci\u00f3n de servicio (consumo de memoria del host y posiblemente ca\u00edda del proceso QEMU) aprovechando una operaci\u00f3n de limpieza perdida en el backend del proxy."}], "lastModified": "2023-02-13T04:50:17.033", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "10EE7DD6-EC30-4385-A028-E579F232BEFA", "versionEndExcluding": "2.8.0"}, {"criteria": "cpe:2.3:a:qemu:qemu:2.8.0:rc0:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "58947AD5-A971-4E22-8D8A-634E2ED5DECD"}, {"criteria": "cpe:2.3:a:qemu:qemu:2.8.0:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "62294521-D8AD-43C1-9B53-D75243DC9A5B"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43"}], "operator": "OR"}]}], "sourceIdentifier": "secalert@redhat.com"}