Yabasic 2.86.1 Basic Source Code flex.c yylex() memory corruption

A vulnerability, which was classified as critical, has been found in Yabasic 2.86.1. Affected by this issue is the function yylex() of the file flex.c of the component Basic Source Code Handler. The manipulation with an unknown input leads to a memory corruption vulnerability (Heap-based). Using CWE to declare the problem leads to CWE-122. Impacted is confidentiality, integrity, and availability.

The weakness was released 12/11/2019. This vulnerability is handled as CVE-2019-19720 since 12/11/2019. 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 12/11/2019).

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

Name

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.5

VulDB Base Score: ≈5.5
VulDB Temp Score: ≈5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Class: Memory corruption / Heap-based (CWE-122)
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
Geopolitics: 🔍
Economy: 🔍
Predictions: 🔍
Remediation: 🔍Recommended: no mitigation known

0-Day Time: 🔒

12/11/2019 Advisory disclosed
12/11/2019 +0 days VulDB entry created
12/11/2019 +0 days CVE assigned
12/11/2019 +0 days VulDB last update
CVE: CVE-2019-19720 (🔒)Created: 12/11/2019 11:02 AM
Complete: 🔍

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