PT-2020-6432 · Unknown · Jerryscript

Owl337 · Published 2020-07-25 · Updated 2021-06-16 · CVE-2021-26199

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions JerryScript version 2.4.0

Description The issue is related to a heap-use-after-free in the ecma bytecode ref function of the ecma-helpers.c file. This can be exploited by a remote attacker to cause a denial of service. The estimated number of potentially affected devices worldwide is not specified. There is no information about real-world incidents where this issue was exploited.

Recommendations For JerryScript version 2.4.0, as a temporary workaround, consider disabling the ecma bytecode ref function until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2021-04675

CVE-2021-26199

Affected Products

Jerryscript

References · 9

• 🔥 https://github.com/jerryscript-project/jerryscript/issues/4056 · Exploit
• https://bdu.fstec.ru/vul/2021-04675 · Security Note
• https://cve.org/CVERecord?id=CVE-2021-26199 · Security Note
• https://osv.dev/vulnerability/CVE-2021-26199 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-26199 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-26199 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-26199 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-26199 · Vendor Advisory
• https://t.me/cvenotify/16122 · Telegram Post