VDB-119700 · CVE-2018-11705 · Qualys 371016

FastStone Image Viewer 6.2 User Mode FSViewer.exe JPEG File memory corruption

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.5	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical was found in FastStone Image Viewer 6.2. This impacts an unknown function of the file FSViewer.exe of the component User Mode. The manipulation as part of JPEG File results in memory corruption. This vulnerability is known as CVE-2018-11705. Attacking locally is a requirement. No exploit is available.

Detailsinfo

A vulnerability classified as critical has been found in FastStone Image Viewer 6.2. Affected is an unknown function of the file FSViewer.exe of the component User Mode. The manipulation as part of a JPEG File leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

FastStone Image Viewer 6.2 has a User Mode Write AV at 0x00578cc4, triggered when the user opens a malformed JPEG file that is mishandled by FSViewer.exe. Attackers could exploit this issue for DoS (Access Violation) or possibly unspecified other impact.

The bug was discovered 06/19/2018. The weakness was published 06/20/2018 (Website). The advisory is shared for download at github.com. This vulnerability is traded as CVE-2018-11705 since 06/04/2018. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 371016 (FastStone Image Viewer Multiple Vulnerabilities).

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

Similar entries are available at VDB-119696, VDB-119697, VDB-119698 and VDB-119699. Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

FastStone

Name

Image Viewer

Version

License

free

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

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

Timelineinfo

06/04/2018 🔍
06/19/2018 +14 days 🔍
06/19/2018 +0 days 🔍
06/20/2018 +1 days 🔍
06/20/2018 +0 days 🔍
02/20/2020 +610 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2018-11705 (🔍)
GCVE (CVE): GCVE-0-2018-11705
GCVE (VulDB): GCVE-100-119700
See also: 🔍

Entryinfo

Created: 06/20/2018 13:38
Updated: 02/20/2020 15:09
Changes: 06/20/2018 13:38 (61), 02/20/2020 15:09 (1)
Complete: 🔍
Cache ID: 216::103