Foxit Reader 9.0.1.5096 valueAsString use after free

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CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.5$0-$5k0.00

A vulnerability was found in Foxit Reader 9.0.1.5096 (Document Reader Software) and classified as critical. Affected by this issue is the function valueAsString. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-416. Impacted is confidentiality, integrity, and availability. CVE summarizes:

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.0.1.5096. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of the valueAsString function. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-6326.

The bug was discovered 07/19/2018. The weakness was disclosed 07/31/2018 (Website). The advisory is shared for download at foxitsoftware.com. This vulnerability is handled as CVE-2018-14308 since 07/16/2018. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 03/12/2020).

The vulnerability was handled as a non-public zero-day exploit for at least 12 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.

The entries 82783, 82784, 82785 and 82786 are pretty similar.

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VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.5

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

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VulDB Base Score: 🔍
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Exploitinginfoedit

Class: Memory corruption
CWE: CWE-416
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍

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Countermeasuresinfoedit

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfoedit

07/16/2018 🔍
07/19/2018 +3 days 🔍
07/31/2018 +11 days 🔍
07/31/2018 +0 days 🔍
08/01/2018 +1 days 🔍
03/12/2020 +589 days 🔍

Sourcesinfoedit

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

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

CVE: CVE-2018-14308 (🔍)
See also: 🔍

Entryinfoedit

Created: 08/01/2018 07:43 AM
Updated: 03/12/2020 08:23 AM
Changes: (2) vulnerability_discoverydate advisory_confirm_url
Complete: 🔍

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