VDB-82321 · CVE-2015-8843 · OpenVAS 801754

Foxit Reader up to 6.2.x/7.2.1 Cloud Update Service 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.
6.1	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Foxit Reader up to 6.2.x/7.2.1. This affects an unknown function of the component Cloud Update Service. This manipulation causes memory corruption. This vulnerability is handled as CVE-2015-8843. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Foxit Reader up to 6.2.x/7.2.1 (Document Reader Software). It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the component Cloud Update Service. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The Foxit Cloud Update Service (FoxitCloudUpdateService) in Foxit Reader 6.1 through 6.2.x and 7.x before 7.2.2, when an update to the Cloud plugin is available, allows local users to gain privileges by writing crafted data to a shared memory region, which triggers memory corruption.

The weakness was released 04/13/2016 (Website). The advisory is shared at zerodayinitiative.com. This vulnerability is known as CVE-2015-8843 since 04/13/2016. An attack has to be approached locally. The successful exploitation needs a single authentication. Neither technical details nor an exploit are publicly available.

Upgrading to version 7.2.2 eliminates this vulnerability.

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

Productinfo

Type

Document Reader Software

Vendor

Foxit

Name

Reader

Version

License

free

Website

Vendor: https://www.foxitsoftware.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.4
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

OpenVAS ID: 801754
OpenVAS Name: Foxit PhantomPDF Local Privilege Escalation Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍
Upgrade: Reader 7.2.2

Timelineinfo

04/13/2016 🔍
04/13/2016 +0 days 🔍
04/13/2016 +0 days 🔍
04/14/2016 +1 days 🔍
10/06/2018 +905 days 🔍

Sourcesinfo

Vendor: foxitsoftware.com

Advisory: zerodayinitiative.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-8843 (🔍)
GCVE (CVE): GCVE-0-2015-8843
GCVE (VulDB): GCVE-100-82321

Entryinfo

Created: 04/14/2016 09:57
Updated: 10/06/2018 11:14
Changes: 04/14/2016 09:57 (55), 10/06/2018 11:14 (9)
Complete: 🔍
Cache ID: 216::103