PT-2021-4876 · Microsoft · Chakra Scripting Engine+2

Published 2021-11-09 · Updated 2023-12-28 · CVE-2021-42279

Positive Technologies (AI Summary)

CVSS v2.0

5.1

Medium

Base vector

AV:N/AC:H/Au:N/C:P/I:P/A:P

Name of the Vulnerable Software and Affected Versions Chakra Scripting Engine versions (affected versions not specified) ChakraCore versions (affected versions not specified)

Description The issue is related to a memory corruption vulnerability in the Chakra Scripting Engine, caused by an out-of-bounds write operation. This can allow a remote attacker to execute arbitrary code. The vulnerability affects the Chakra Scripting Engine and ChakraCore.

Recommendations For Chakra Scripting Engine, at the moment, there is no information about a newer version that contains a fix for this vulnerability. For ChakraCore, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Buffer Overflow

Memory Corruption

Weakness Enumeration

CWE-119

CWE-787

Related Identifiers

BDU:2021-05606

CVE-2021-42279

GHSA-JGRP-6QQQ-3284

Affected Products

Chakra Scripting Engine

Chakracore

Windows

References · 12

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42279 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-42279 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-42279 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2021-42279 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-42279 · Security Note
• https://bdu.fstec.ru/vul/2021-05606 · Security Note
• https://osv.dev/vulnerability/GHSA-jgrp-6qqq-3284 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42279 · Security Note
• https://t.me/true_secator/2302 · Telegram Post
• https://t.me/cibsecurity/32137 · Telegram Post
• https://cybersecurity-help.cz/vdb/SB2021110927 · Note
• https://t.me/isacarusec/4647 · Telegram Post