CVE-2016-4296

When opening a Hangul Hcell Document (.cell) and processing a record that uses the CSSValFormat object, Hancom Office 2014 will search for an underscore ("_") character at the end of the string and write a null terminator after it. If the character is at the very end of the string, the application will mistakenly write the null-byte outside the bounds of its destination. This can result in heap corruption that can lead code execution under the context of the application

CVSS v3 7.8 HIGH
CVSS v2.0 6.8 MEDIUM

7.8^/10

CVSS v3 : HIGH

Vector : AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
http://www.securityfocus.com/bid/92327
http://www.talosintelligence.com/reports/TALOS-2016-0151/	Exploit Technical Description Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/92327
http://www.talosintelligence.com/reports/TALOS-2016-0151/	Exploit Technical Description Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

cpe:2.3:a:hancom:hancom_office_2014:*:*:*:*:*:*:*:*

History

21 Nov 2024, 02:51

Type	Values Removed	Values Added
References	~~() http://www.securityfocus.com/bid/92327 -~~	() http://www.securityfocus.com/bid/92327 -
References	~~() http://www.talosintelligence.com/reports/TALOS-2016-0151/ - Exploit, Technical Description, Third Party Advisory, VDB Entry~~	() http://www.talosintelligence.com/reports/TALOS-2016-0151/ - Exploit, Technical Description, Third Party Advisory, VDB Entry

Information

Published : 2017-01-06 21:59

Updated : 2024-11-21 02:51

NVD link : CVE-2016-4296

Mitre link : CVE-2016-4296

CVE.ORG link : CVE-2016-4296

JSON object : View

Products Affected

hancom

hancom_office_2014

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

{"id": "CVE-2016-4296", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV30": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2017-01-06T21:59:01.337", "references": [{"url": "http://www.securityfocus.com/bid/92327", "source": "cret@cert.org"}, {"url": "http://www.talosintelligence.com/reports/TALOS-2016-0151/", "tags": ["Exploit", "Technical Description", "Third Party Advisory", "VDB Entry"], "source": "cret@cert.org"}, {"url": "http://www.securityfocus.com/bid/92327", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.talosintelligence.com/reports/TALOS-2016-0151/", "tags": ["Exploit", "Technical Description", "Third Party Advisory", "VDB Entry"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-119"}]}], "descriptions": [{"lang": "en", "value": "When opening a Hangul Hcell Document (.cell) and processing a record that uses the CSSValFormat object, Hancom Office 2014 will search for an underscore (\"_\") character at the end of the string and write a null terminator after it. If the character is at the very end of the string, the application will mistakenly write the null-byte outside the bounds of its destination. This can result in heap corruption that can lead code execution under the context of the application"}, {"lang": "es", "value": "Cuando se abre un Hangul Hcell Document (.cell) y se procesa un registro que utiliza el objeto CSSValFormat, Hancom Office 2014 buscar\u00e1 un caracter de gui\u00f3n bajo (\"_\") al final de la cadena y escribir\u00e1 un terminador nulo tras \u00e9l. Si el car\u00e1cter est\u00e1 al final de la cadena, la aplicaci\u00f3n escribir\u00e1 err\u00f3neamente el byte nulo fuera de los l\u00edmites de su destino. Esto puede resultar en la corrupci\u00f3n de la memoria din\u00e1mica, que puede conducir a ejecuci\u00f3n de c\u00f3digo bajo el contexto de la aplicaci\u00f3n."}], "lastModified": "2024-11-21T02:51:49.383", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:hancom:hancom_office_2014:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C0371DC9-A86B-4729-B74C-7C0AA87A54BB", "versionEndIncluding": "9.1.0.2176"}], "operator": "OR"}]}], "sourceIdentifier": "cret@cert.org"}