#telnet

Authentication bypass in Netcomm router models NF20MESH, NF20, and NL1902 allows an unauthenticated user to access content. In order to serve static content, the application performs a check for the existence of specific characters in the URL (.css, .png etc). If it exists, it performs a "fake login" to give the request an active session to load the file and not redirect to the login page.

The AI-based chatbot is allowing bad actors with absolutely no coding experience to develop malware.

The web service on Nexxt Amp300 ARN02304U8 42.103.1.5095 devices allows remote OS command execution by placing &telnetd in the JSON host field to the ping feature of the goform/sysTools component. Authentication is required.

There is an unauthorized buffer overflow vulnerability in Tenda AX12 v22.03.01.21 _ cn. This vulnerability can cause the web service not to restart or even execute arbitrary code. It is a different vulnerability from CVE-2022-2414.

Nexxt Router Firmware version 42.103.1.5095 authenticated remote code execution exploit that enables telnetd.

Apache Dubbo is a Java based, open source RPC framework. Versions prior to 2.6.10 and 2.7.10 are vulnerable to pre-authorization remote code execution via arbitrary bean manipulation in the Telnet handler. The Dubbo main service port can be used to access a Telnet Handler which offers some basic methods to collect information about the providers and methods exposed by the service and it can even allow to shutdown the service. This endpoint is unprotected. Additionally, a provider method can be invoked using the `invoke` handler. This handler uses a safe version of FastJson to process the call arguments. However, the resulting list is later processed with `PojoUtils.realize` which can be used to instantiate arbitrary classes and invoke its setters. Even though FastJson is properly protected with a default blocklist, `PojoUtils.realize` is not, and an attacker can leverage that to achieve remote code execution. Versions 2.6.10 and 2.7.10 contain fixes for this issue.

Apache Dubbo is a java based, open source RPC framework. Versions prior to 2.6.10 and 2.7.10 are vulnerable to pre-auth remote code execution via arbitrary bean manipulation in the Telnet handler. The Dubbo main service port can be used to access a Telnet Handler which offers some basic methods to collect information about the providers and methods exposed by the service and it can even allow to shutdown the service. This endpoint is unprotected. Additionally, a provider method can be invoked using the `invoke` handler. This handler uses a safe version of FastJson to process the call arguments. However, the resulting list is later processed with `PojoUtils.realize` which can be used to instantiate arbitrary classes and invoke its setters. Even though FastJson is properly protected with a default blocklist, `PojoUtils.realize` is not, and an attacker can leverage that to achieve remote code execution. Versions 2.6.10 and 2.7.10 contain fixes for this issue.

A vulnerability was found in Multilaser RE708 RE1200R4GC-2T2R-V3_v3411b_MUL029B. It has been rated as problematic. This issue affects some unknown processing of the component Telnet Service. The manipulation leads to denial of service. The attack may be initiated remotely. The identifier VDB-217169 was assigned to this vulnerability.

Attackers are harvesting credentials from compromised systems. Here's how some commonly used tools can enable this.

Gentoo Linux Security Advisory 202212-6 - Multiple vulnerabilities have been found in OpenSSH, the worst of which could result in arbitrary code execution. Versions less than 9.1_p1 are affected.