SWFTools 2013-04-09-1007 on Windows font2swf TTF File Access Violation memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability was found in SWFTools 2013-04-09-1007 on Windows. It has been rated as problematic. This impacts an unknown function of the component font2swf. The manipulation as part of TTF File leads to memory corruption (Access Violation). This vulnerability is referenced as CVE-2017-8420. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in SWFTools 2013-04-09-1007 on Windows (Programming Tool Software) and classified as problematic. This issue affects an unknown function of the component font2swf. The manipulation as part of a TTF File leads to a memory corruption vulnerability (Access Violation). Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability. The summary by CVE is:

SWFTools 2013-04-09-1007 on Windows has a "Data from Faulting Address controls Branch Selection starting at image00000000_00400000+0x0000000000003e71" issue. This issue can be triggered by a malformed TTF file that is mishandled by font2swf. Attackers could exploit this issue for DoS (Access Violation).

The bug was discovered 06/25/2017. The weakness was published 07/05/2017 (Website). The advisory is shared at github.com. The identification of this vulnerability is CVE-2017-8420 since 05/02/2017. 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. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 10 days. During that time the estimated underground price was around $0-$5k.

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

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.4

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
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

Name: Access Violation
Class: Memory corruption / Access Violation
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
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

05/02/2017 🔍
06/25/2017 +54 days 🔍
07/05/2017 +10 days 🔍
07/05/2017 +0 days 🔍
07/06/2017 +1 days 🔍
10/22/2019 +838 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2017-8420 (🔍)
GCVE (CVE): GCVE-0-2017-8420
GCVE (VulDB): GCVE-100-103145

Entryinfo

Created: 07/06/2017 11:00
Updated: 10/22/2019 18:50
Changes: 07/06/2017 11:00 (59), 10/22/2019 18:50 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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