PT-2022-3728 · Nginx · Nginx Njs

Dramthy · Published 2022-07-18 · Updated 2022-07-25 · CVE-2022-34031

Positive Technologies (AI Summary)

CVSS v2.0

7.5

High

Base vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Name of the Vulnerable Software and Affected Versions Nginx NJS version 0.7.5

Description The issue is related to a segmentation violation via the njs value to number() function at src/njs value conversion.h in the Nginx NJS interpreter. This can lead to a buffer overflow in memory, potentially allowing a remote attacker to execute arbitrary code.

Recommendations For Nginx NJS version 0.7.5, consider disabling the njs value to number() function as a temporary workaround until a patch is available.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

BDU:2022-04516

CVE-2022-34031

Affected Products

Nginx Njs

References · 8

• 🔥 https://github.com/nginx/njs/issues/523 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2022-34031 · Security Note
• https://osv.dev/vulnerability/CVE-2022-34031 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-04516 · Security Note
• https://github.com/nginx/njs/commit/86c2c8270240d0a7a1bc4757fd2010fd989e8037 · Note
• https://t.me/cvenotify/33332 · Telegram Post
• https://vuldb.com/ru/?id.204150 · Note
• https://t.me/cibsecurity/46515 · Telegram Post