Vulnerabilities > CVE-2021-20275 - Out-of-bounds Read vulnerability in multiple products

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

NONE

Integrity impact

NONE

Availability impact

HIGH

network

low complexity

NVD

Published: 2021-03-09

Updated: 2024-11-21

Summary

A flaw was found in privoxy before 3.0.32. A invalid read of size two may occur in chunked_body_is_complete() leading to denial of service.

Part	Description	Count
Application	Privoxy Privoxy Privoxy 2.9.20 Privoxy Privoxy 3.0.0 Privoxy Privoxy 3.0.2 Privoxy Privoxy 3.0.3 Privoxy Privoxy 3.0.5 Privoxy Privoxy 3.0.6 Privoxy Privoxy 3.0.7 Privoxy Privoxy 3.0.8 Privoxy Privoxy 3.0.9 Privoxy Privoxy 3.0.10 Privoxy Privoxy 3.0.11 Privoxy Privoxy 3.0.12 Privoxy Privoxy 3.0.13 Privoxy Privoxy 3.0.14 Privoxy Privoxy 3.0.15 Privoxy Privoxy 3.0.16 Privoxy Privoxy 3.0.17 Privoxy Privoxy 3.0.18 Privoxy Privoxy 3.0.19 Privoxy Privoxy 3.0.20 Privoxy Privoxy 3.0.21 Privoxy Privoxy 3.0.22 Privoxy Privoxy 3.0.23 Privoxy Privoxy 3.0.24 Privoxy Privoxy 3.0.25 Privoxy Privoxy 3.0.26 Privoxy Privoxy 3.0.28 Privoxy Privoxy 3.0.28-2.1 Privoxy Privoxy 3.0.28-Lp151.1.1 Privoxy Privoxy 3.0.29	30
OS	Debian Debian Debian Linux 9.0	1

Overread Buffers
An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.