CVE-2021-46461 : njs through 0.7.0, used in NGINX, was discovered to contain an out-of-bounds arr

njs through 0.7.0, used in NGINX, was discovered to contain an out-of-bounds array access via njs_vmcode_typeof in /src/njs_vmcode.c.

Published 2022-02-14 22:15:08

Updated 2022-05-11 14:40:41

Source MITRE

View at NVD, CVE.org

Vulnerability category: Overflow

Products affected by CVE-2021-46461

Nginx » NJS
Versions up to, including, (<=) 0.7.0
cpe:2.3:a:nginx:njs:*:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.86%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 82 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.5	HIGH	AV:N/AC:L/Au:N/C:P/I:P/A:P	10.0	6.4	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

Assigned by: nvd@nist.gov (Primary)

https://security.netapp.com/advisory/ntap-20220303-0007/

February 2022 NGINX Vulnerabilities in NetApp Products | NetApp Product Security
Third Party Advisory

CVEs referencing this url
https://github.com/nginx/njs/issues/450

illegal memcpy during njs_vmcode_typeof in /njs/src/njs_vmcode.c:1521:18 · Issue #450 · nginx/njs · GitHub
Exploit;Third Party Advisory
https://github.com/nginx/njs/commit/d457c9545e7e71ebb5c0479eb16b9d33175855e2

Added missing element in typeof table for DataView() type. · nginx/njs@d457c95 · GitHub
Patch;Vendor Advisory

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