PT-2021-6713 · Mujs · Mujs

Bird8693 · Published 2021-07-13 · Updated 2021-07-15 · CVE-2020-22886

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions muJS versions prior to 1.0.8

Description The issue is related to a buffer overflow vulnerability in the jsG markobject function of the jsgc.c component in the MuJS JavaScript interpreter. This vulnerability is caused by the lack of input validation when copying a buffer, allowing a remote attacker to cause a denial of service.

Recommendations For versions prior to 1.0.8, update to version 1.0.8 or later to resolve the issue. As a temporary workaround, consider restricting access to the jsG markobject function in the jsgc.c component until a patch is available.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

BDU:2022-02075

CVE-2020-22886

Affected Products

Mujs

References · 9

• 🔥 https://github.com/ccxvii/mujs/issues/134 · Exploit
• https://security-tracker.debian.org/tracker/CVE-2020-22886 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-22886 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-22886 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-22886 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-22886 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-22886 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-22886 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-02075 · Security Note