CVE-2020-21699

Published: Aug 22, 2023Modified: Jun 17, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

The web server Tengine 2.2.2 developed in the Nginx version from 0.5.6 thru 1.13.2 is vulnerable to an integer overflow vulnerability in the nginx range filter module, resulting in the leakage of potentially sensitive information triggered by specially crafted requests.

Affected (1)

Products: Alibaba: Tengine

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Alibaba Tengine	Version 2.2.2

Related CWEs

Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

References (2)

https://github.com/ZxDecide/Nginx-variants/blob/master/%E9%99%84%E4%BB%B6%28Tengine%29.docx

Source: cve@mitre.org

https://github.com/ZxDecide/Nginx-variants/blob/master/%E9%99%84%E4%BB%B6%28Tengine%29.docx

Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.