PT-2022-4327 · Nginx · Nginx Njs

Q1Iq · Published 2022-05-23 · Updated 2022-07-08 · CVE-2022-31307

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 segmentation violation in the njs string offset function at src/njs string.c. This can lead to an uncontrolled resource consumption. An attacker, acting remotely, may exploit this issue to elevate their privileges.

Recommendations For Nginx NJS version 0.7.2, as a temporary workaround, consider disabling the njs string offset function until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Resource Exhaustion

Use After Free

Weakness Enumeration

CWE-400

CWE-416

Related Identifiers

BDU:2022-05185

CVE-2022-31307

Affected Products

Nginx Njs

References · 9

• 🔥 https://github.com/nginx/njs/issues/482 · Exploit
• https://github.com/nginx/njs/commit/eafe4c7a326b163612f10861392622b5da5b1792 · Patch
• https://bdu.fstec.ru/vul/2022-05185 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-31307 · Security Note
• https://osv.dev/vulnerability/CVE-2022-31307 · Vendor Advisory
• https://t.me/cvenotify/32800 · Telegram Post
• https://t.me/cibsecurity/44882 · Telegram Post
• https://t.me/cvenotify/32341 · Telegram Post
• https://vuldb.com/ru/?id.202445 · Note