PT-2022-12765 · Cesanta · Cesanta Mjs

Hope-Fly · Published 2022-01-27 · Updated 2022-02-02 · CVE-2021-46520

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Cesanta MJS version 2.20.0

Description A heap buffer overflow issue was discovered in Cesanta MJS via the mjs jprintf function at src/mjs util.c.

Recommendations For Cesanta MJS version 2.20.0, consider disabling the mjs jprintf function as a temporary workaround until a patch is available. At the moment, there is no information about a newer version that contains a fix for this issue.

Exploit

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2021-46520

Affected Products

Cesanta Mjs

References · 4

• 🔥 https://github.com/cesanta/mjs/issues/193 · Exploit
• https://osv.dev/vulnerability/CVE-2021-46520 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-46520 · Security Note
• https://t.me/cvenotify/26146 · Telegram Post