VDB-191549 · CVE-2021-44994 · ID 4894

Jerryscript 3.0.0 jmem-heap.c allocation of resources

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.
3.5	$0-$5k	0.00

Overview

A vulnerability, which was classified as problematic, has been found in Jerryscript 3.0.0. This issue affects some unknown processing of the file /jerry-core/jmem/jmem-heap.c. The manipulation leads to allocation of resources. The CWE definition for the vulnerability is CWE-770. The weakness was shared 01/25/2022 as 4894. The advisory is shared at github.com. The identification of this vulnerability is CVE-2021-44994. The attack can only be done within the local network. Technical details are available. There is no exploit available. The price for an exploit might be around USD $0-$5k at the moment. It is declared as not defined. We expect the 0-day to have been worth approximately $0-$5k. A possible mitigation has been published before and not just after the disclosure of the vulnerability. [Details]

Activities

Timeline

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Lang

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Country

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Actors

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Activities

IOC - Indicator of Compromise (2)

These indicators of compromise highlight associated network ranges which are known to be part of research and attack activities.

ID	IP range	Actor	Type	Confidence
1	5.135.120.0/24	APT33	predictive	High
2	xxx.xxx.xxx.x	xxxxx	predictive	High

IOA - Indicator of Attack (1)

These indicators of attack list the potential fragments used for technical activities like reconnaissance, exploitation, privilege escalation, and exfiltration. This data is unique as it uses our predictive model for actor profiling.

ID	Class	Indicator	Type	Confidence
1	File	/jerry-core/jmem/jmem-heap.c	predictive	High

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