PT-2023-7315 · Nginx · Nginx Njs

Ret2Ddmeo · Published 2023-04-09 · Updated 2023-05-26 · CVE-2023-27727

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 Nginx NJS version 0.7.10

Description The issue is related to a segmentation violation via the function njs function frame at src/njs function.h. This can lead to a denial of service. The vulnerability is associated with a memory access issue, specifically reading beyond memory boundaries.

Recommendations For Nginx NJS version 0.7.10, consider disabling the njs function frame function as a temporary workaround until a patch is available. Restrict access to the njs function frame function to minimize the risk of exploitation.

Exploit

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

BDU:2023-08344

CVE-2023-27727

Affected Products

Nginx Njs

References · 8

• 🔥 https://github.com/nginx/njs/issues/617 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2023-27727 · Security Note
• https://osv.dev/vulnerability/CVE-2023-27727 · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-08344 · Security Note
• https://github.com/nginx/njs/commit/484411868bf9351ae7513008f6efd28caa72574f · Note
• https://t.me/cvenotify/47854 · Telegram Post
• https://security.snyk.io/vuln/SNYK-UNMANAGED-NGINXNJS-5416709 · Note
• https://t.me/cibsecurity/61729 · Telegram Post