PT-2022-3359 · Nginx · Nginx Njs

P1Umer + 1 · Published 2022-03-01 · Updated 2022-06-10 · CVE-2022-30503

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 0.7.2

Description The issue is related to a segmentation violation in the njs set number() function, which can be caused by insufficient input data sanitization, leading to a buffer overflow. This can potentially allow a remote attacker to cause a denial of service.

Recommendations For Nginx NJS version 0.7.2, as a temporary workaround, consider disabling the njs set number() function until a patch is available. Restrict access to the Nginx server to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Buffer Overflow

Weakness Enumeration

CWE-20

CWE-119

Related Identifiers

BDU:2022-04119

CVE-2022-30503

Affected Products

Nginx Njs

References · 8

• https://github.com/nginx/njs/commit/5c6130a2a0b4c41ab415f6b8992aa323636338b9 · Patch
• https://osv.dev/vulnerability/CVE-2022-30503 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-30503 · Security Note
• https://bdu.fstec.ru/vul/2022-04119 · Security Note
• https://github.com/nginx/njs/issues/478 · Note
• https://github.com/nginx/njs · Note
• https://security.snyk.io/vuln/SNYK-UNMANAGED-NGINXNJS-2858287 · Note
• https://tenable.com/cve/CVE-2022-30503 · Note