Hancom Office 9.6.1.7634 tfo_common HwordApp.dll DOCX File use after free

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Hancom Office 9.6.1.7634. The affected element is an unknown function in the library HwordApp.dll of the component tfo_common. The manipulation as part of DOCX File leads to use after free. This vulnerability is listed as CVE-2019-16338. The attack must be carried out locally. There is no available exploit.

Detailsinfo

A vulnerability was found in Hancom Office 9.6.1.7634. It has been rated as critical. This issue affects an unknown code in the library HwordApp.dll of the component tfo_common. The manipulation as part of a DOCX File leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The tfo_common component in HwordApp.dll in Hancom Office 9.6.1.7634 allows a use-after-free via a crafted .docx file.

The weakness was presented 03/19/2020. The identification of this vulnerability is CVE-2019-16338 since 09/15/2019. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

See VDB-151882 for similar entry. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/15/2019 🔍
03/19/2020 +186 days 🔍
03/20/2020 +1 days 🔍
05/11/2025 +1878 days 🔍

Sourcesinfo

Advisory: starlabs.sg
Status: Not defined

CVE: CVE-2019-16338 (🔍)
GCVE (CVE): GCVE-0-2019-16338
GCVE (VulDB): GCVE-100-151883
See also: 🔍

Entryinfo

Created: 03/20/2020 08:06
Updated: 05/11/2025 16:53
Changes: 03/20/2020 08:06 (38), 03/20/2020 08:11 (17), 04/18/2024 08:23 (17), 04/18/2024 08:27 (1), 05/11/2025 16:53 (3)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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