CVE Vulnerabilities

CVE-2020-23309

Reachable Assertion

Published: Jun 10, 2021 | Modified: Jun 16, 2021
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM

There is an Assertion context_p->stack_depth == context_p->context_stack_depth failed at js-parser-statm.c:2756 in parser_parse_statements in JerryScript 2.2.0.

Weakness

The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.

Affected Software

Name Vendor Start Version End Version
Jerryscript Jerryscript 2.2.0 (including) 2.2.0 (including)
Iotjs Ubuntu bionic *
Iotjs Ubuntu esm-apps/bionic *
Iotjs Ubuntu esm-apps/jammy *
Iotjs Ubuntu groovy *
Iotjs Ubuntu hirsute *
Iotjs Ubuntu impish *
Iotjs Ubuntu jammy *
Iotjs Ubuntu trusty *
Iotjs Ubuntu upstream *
Iotjs Ubuntu xenial *

Extended Description

While assertion is good for catching logic errors and reducing the chances of reaching more serious vulnerability conditions, it can still lead to a denial of service. For example, if a server handles multiple simultaneous connections, and an assert() occurs in one single connection that causes all other connections to be dropped, this is a reachable assertion that leads to a denial of service.

Potential Mitigations

References