CVE-2022-31307 : Nginx NJS v0.7.2 was discovered to contain a segmentation violation in the funct

Nginx NJS v0.7.2 was discovered to contain a segmentation violation in the function njs_string_offset at src/njs_string.c.

Published 2022-06-21 13:15:08

Updated 2022-07-08 16:51:03

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2022-31307

F5 » NJS » Version: 0.7.2
cpe:2.3:a:f5:njs:0.7.2:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.06%

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

~ 21 %

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

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.3	MEDIUM	AV:N/AC:M/Au:N/C:N/I:N/A:P	8.6	2.9	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
5.5	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H	1.8	3.6	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Assigned by: nvd@nist.gov (Primary)

https://github.com/nginx/njs/commit/eafe4c7a326b163612f10861392622b5da5b1792

Fixed Array.prototype.lastIndexOf() with unicode string as "this". · nginx/njs@eafe4c7 · GitHub
Patch;Third Party Advisory
https://github.com/nginx/njs/issues/482

SEGV njs_string.c:2535:18 in njs_string_offset · Issue #482 · nginx/njs · GitHub
Exploit;Issue Tracking;Third Party Advisory

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