PT-2023-22309 · Cesanta · Cesanta Mjs

Z1R00 · Published 2023-04-14 · Updated 2023-04-19 · CVE-2023-29569

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

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

Description The issue is related to a SEGV vulnerability via ffi cb impl wpwwwww at src/mjs ffi.c, which can lead to a Denial of Service (DoS).

Recommendations For Cesanta MJS version 2.20.0, consider disabling the ffi cb impl wpwwwww 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 vulnerability.

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2023-29569

Affected Products

Cesanta Mjs

References · 6

• 🔥 https://github.com/cesanta/mjs/issues/239 · Exploit
• 🔥 https://github.com/z1r00/fuzz_vuln/blob/main/mjs/SEGV/mjs_ffi/readme.md · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2023-29569 · Security Note
• https://osv.dev/vulnerability/CVE-2023-29569 · Vendor Advisory
• https://t.me/cibsecurity/62127 · Telegram Post
• https://t.me/cvenotify/48222 · Telegram Post