PT-2020-6412 · Unknown · Jerryscript

Owl337 · Published 2020-06-01 · Updated 2021-06-16 · CVE-2020-23311

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions JerryScript version 2.2.0

Description The issue is related to an incorrect comparison in the parser parse object initializer function of the js-parser-expr.c component in JerryScript. This could potentially allow a remote attacker to cause a denial of service. The comparison involves checking the context p->token.type against specific values, including LEXER RIGHT BRACE, LEXER ASSIGN, and LEXER COMMA.

Recommendations For JerryScript version 2.2.0, as a temporary workaround, consider disabling the parser parse object initializer function until a patch is available. Restrict access to the js-parser-expr.c component to minimize the risk of exploitation. Avoid using the context p->token.type variable in the affected function until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Assertion Failure

Weakness Enumeration

CWE-617

Related Identifiers

BDU:2021-04632

CVE-2020-23311

Affected Products

Jerryscript

References · 8

• 🔥 https://github.com/jerryscript-project/jerryscript/issues/3822 · Exploit
• https://osv.dev/vulnerability/CVE-2020-23311 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-23311 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-04632 · Security Note
• https://cve.org/CVERecord?id=CVE-2020-23311 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-23311 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2020-23311 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-23311 · Vendor Advisory