PT-2022-2654 · Nginx · Nginx Njs

Andreafioraldi · Published 2022-02-17 · Updated 2022-07-01 · CVE-2022-28049

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 NGINX NJS version 0.7.2

Description The issue is related to a NULL pointer dereference via the njs vmcode array component at /src/njs vmcode.c. This can potentially allow a remote attacker to cause a denial of service.

Recommendations For NGINX NJS version 0.7.2, consider disabling the njs vmcode array component as a temporary workaround until a patch is available. Restrict access to the /src/njs vmcode.c component to minimize the risk of exploitation. 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

BDU:2022-03127

CVE-2022-28049

Affected Products

Nginx Njs

References · 14

• 🔥 https://github.com/nginx/njs/issues/473 · Exploit
• https://github.com/nginx/njs/commit/f65981b0b8fcf02d69a40bc934803c25c9f607ab · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-28049 · Security Note
• https://ubuntu.com/security/CVE-2022-25309 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-28049 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5366-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-03127 · Security Note
• https://github.com/fribidi/fribidi/commit/f22593b82b5d1668d1997dbccd10a9c31ffea3b3 · Note
• https://github.com/fribidi/fribidi/issues/182 · Note
• https://security.netapp.com/advisory/ntap-20220519-0008 · Note
• https://t.me/cvenotify/29002 · Telegram Post
• https://access.redhat.com/security/cve/CVE-2022-25309 · Note
• https://t.me/cvenotify/30470 · Telegram Post
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-25309 · Note