August 8, 2023—KB5029250 (OS Build 20348.1906)

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Hitachi Energy RTU500 series

1. EXECUTIVE SUMMARY ​CVSS v3 7.5 ​ATTENTION: Exploitable remotely/low attack complexity ​Vendor: Hitachi Energy ​Equipment: RTU500 series ​Vulnerabilities: Stack-based Buffer Overflow 2. RISK EVALUATION ​Successful exploitation of these vulnerabilities could cause a buffer overflow and reboot of...

HTTP Request Smuggling

protocol-http1 is vulnerable to HTTP Request Smuggling. The vulnerability exists in the read function of chunked.rb due to improper HTTP/1 implementation based on the RFC spec, such as allowing Content-Length header values with a + or 0x prefix, which can lead to HTTP request smuggling and firewa...

Web Application Firewall is blocking a valid image upload

We have observed that files with signature numbers starting with "FFD8 FFE0" are allowed through the Web Application Firewall WAF, but files with signature numbers starting with "FFD8 FFE1" are getting blocked...

Zyxel USG < 5.37 / ATP < 5.37 / VPN < 5.37 Multiple Vulnerabilities

Firmware version of the Zyxel USG, ATP, VPN is less than 5.37. This Zyxel device firmware is affected by multiple vulnerabilities: - A command injection vulnerability in the Free Time WiFi hotspot feature of some firewall versions could allow an unauthenticated, LAN-based attacker to execute some...

Mitsubishi Electric MELSEC-F Series Authentication Bypass By Capture-Replay (CVE-2023-2846)

Authentication Bypass by Capture-replay vulnerability in Mitsubishi Electric Corporation MELSEC-F Series main modules allows a remote unauthenticated attacker to cancel the password/keyword setting and login to the affected products by sending specially crafted packets. This plugin only works wit...

CVE-2023-38697

A flaw was found in the protocol-http1 rubygem package. The protocol-http1 provides a low-level implementation of the HTTP/1 protocol. This behavior can lead to desync when forwarding through multiple HTTP parsers, potentially resulting in HTTP request smuggling and firewall bypassing...

CVE-2023-38697

protocol-http1 provides a low-level implementation of the HTTP/1 protocol. RFC 9112 Section 7.1 defined the format of chunk size, chunk data and chunk extension. The value of Content-Length header should be a string of 0-9 digits, the chunk size should be a string of hex digits and should split...

CVE-2023-33377

Connected IO v2.1.0 and prior has an OS command injection vulnerability in the set firewall command in part of its communication protocol, enabling attackers to execute arbitrary OS commands on devices...

CVE-2023-33377

Connected IO v2.1.0 and prior has an OS command injection vulnerability in the set firewall command in part of its communication protocol, enabling attackers to execute arbitrary OS commands on devices...

CVE-2023-33377

Connected IO v2.1.0 and prior has an OS command injection vulnerability in the set firewall command in part of its communication protocol, enabling attackers to execute arbitrary OS commands on devices...

Design/Logic Flaw

protocol-http1 provides a low-level implementation of the HTTP/1 protocol. RFC 9112 Section 7.1 defined the format of chunk size, chunk data and chunk extension. The value of Content-Length header should be a string of 0-9 digits, the chunk size should be a string of hex digits and should split...

CVE-2023-38697

protocol-http1 provides a low-level implementation of the HTTP/1 protocol. RFC 9112 Section 7.1 defined the format of chunk size, chunk data and chunk extension. The value of Content-Length header should be a string of 0-9 digits, the chunk size should be a string of hex digits and should split...

CVE-2023-38697

protocol-http1 provides a low-level implementation of the HTTP/1 protocol. RFC 9112 Section 7.1 defined the format of chunk size, chunk data and chunk extension. The value of Content-Length header should be a string of 0-9 digits, the chunk size should be a string of hex digits and should split...

CVE-2023-38697 protocol-http1 HTTP Request/Response Smuggling vulnerability

protocol-http1 provides a low-level implementation of the HTTP/1 protocol. RFC 9112 Section 7.1 defined the format of chunk size, chunk data and chunk extension. The value of Content-Length header should be a string of 0-9 digits, the chunk size should be a string of hex digits and should split...

CVE-2023-38697

The CVE-2023-38697 entry concerns protocol-http1 (HTTP/1) parsing: Falcon’s RFC-compliant checks on Content-Length and chunk size can be bypassed by accepting +, 0x prefixes, and LF in chunk extensions, causing desynchronization across HTTP parsers and enabling HTTP request smuggling or firewall ...

Connected IO Operating System Command Injection Vulnerability

Connected IO is a leading hardware, software and cloud-based IoT and machine-to-machine solution from US-based Connected IO, Inc. A security vulnerability exists in Connected IO ER2000 v2.1.0 and earlier versions, which stems from a command injection vulnerability in the set firewall command in t...

protocol-http1 environmental issue vulnerability

protocol-http1 is a low-level implementation of HTTP/1. An environmental issue vulnerability exists in protocol-http1 versions prior to 0.15.1, which stems from an RFC rule violation by Falcon, leading to HTTP request smuggling and firewall bypass issues...

protocol-http1 HTTP Request/Response Smuggling vulnerability

Impact RFC 9112 Section 7.1 defined the format of chunk size, chunk data and chunk extension detailed ABNF is in Appendix section. In summary: - The value of Content-Length header should be a string of 0-9 digits. - The chunk size should be a string of hex digits and should split from chunk data...

protocol-http1 HTTP Request/Response Smuggling vulnerability

Impact RFC 9112 Section 7.1 defined the format of chunk size, chunk data and chunk extension detailed ABNF is in Appendix section. In summary: - The value of Content-Length header should be a string of 0-9 digits. - The chunk size should be a string of hex digits and should split from chunk data...