Category Archives: scanning

Scanning udp port 1434 SQL Browser

Objective

On UDP port 1434 is most likely the MS SQL Browser Service listening.
You can query this service to retrieve version info and the TCP port where MS SQL Server Service is listening.

Nmap

nmap -P0 -v -sU -sV -p 1434 <ip> --script ms-sql-info

MS KB2871997: Update to Improve Credentials Protection and Management

Nessus Output:

Description
The remote host is missing one or more of the following Microsoft updates: KB2871997, KB2973351, KB2975625, KB2982378, KB2984972, KB2984976, KB2984981, KB2973501, or KB3126593. 
These updates are needed to improve the protection against possible credential theft.
- For Windows 7 / 2008 R2 :
KB2984972, KB2871997, KB2982378, and KB2973351 are required; also, KB2984976 (if KB2592687 is installed) or KB2984981 (if KB2830477 is installed).
- For Windows 8 / 2012 :
KB2973501, KB2871997, and KB2973351 are required.
- For Windows 8.1 / 2012 R2 :
KB2973351 (if Update 1 is installed) or KB2975625 (if Update 1 isn't installed).
These updates provide additional protection for the Local Security Authority (LSA), add a restricted administrative mode for Credential Security Support Provider (CredSSP), 
introduce support for the protected account-restricted domain user category, enforce stricter authentication policies, add additional protection for users' credentials, and add a restricted administrative mode for Remote Desktop Connection and Remote Desktop Protocol.
Solution
Microsoft has released a set of patches for Windows 7, 2008 R2, 8, 2012, 8.1, and 2012 R2.

Output
A required registry setting is missing:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\WDigest\UseLogonCredential = 0
More information: https://blogs.technet.microsoft.com/kfalde/2014/11/01/kb2871997-and-wdigest-part-1/

Continue reading →

SSL Version 2 and 3 Protocol Detection

Nessus Output:

Description

The remote service accepts connections encrypted using SSL 2.0 and/or SSL 3.0. These versions of SSL are affected by several cryptographic flaws. 
An attacker can exploit these flaws to conduct man-in-the-middle attacks or to decrypt communications between the affected service and clients.
NIST has determined that SSL 3.0 is no longer acceptable for secure communications. As of the date of enforcement found in PCI DSS v3.1, 
any version of SSL will not meet the PCI SSC'S definition of 'strong cryptography'.

Solution
Consult the application's documentation to disable SSL 2.0 and 3.0.
Use TLS 1.1 (with approved cipher suites) or higher instead.

Continue reading →

SSL DROWN Attack Vulnerability (Decrypting RSA with Obsolete and Weakened eNcryption)

Nessus Output:

Description

The remote host supports SSLv2 and therefore may be affected by a vulnerability that allows a cross-protocol Bleichenbacher padding oracle attack known as DROWN (Decrypting RSA with Obsolete and Weakened eNcryption). 
This vulnerability exists due to a flaw in the Secure Sockets Layer Version 2 (SSLv2) implementation, 
and it allows captured TLS traffic to be decrypted. 
A man-in-the-middle attacker can exploit this to decrypt the TLS connection by utilizing previously captured traffic and weak cryptography along with a series of specially crafted connections to an SSLv2 server that uses the same private key.

Solution

Disable SSLv2 and export grade cryptography cipher suites. 
Ensure that private keys are not used anywhere with server software that supports SSLv2 connections.

Continue reading →

SSL/TLS Diffie-Hellman Modulus <= 1024 Bits (Logjam)

Nessus Output:

Description
The remote host allows SSL/TLS connections with one or more Diffie-Hellman moduli less than or equal to 1024 bits. 
Through cryptanalysis, a third party may be able to find the shared secret in a short amount of time (depending on modulus size and attacker resources). 
This may allow an attacker to recover the plaintext or potentially violate the integrity of connections.

Solution
Reconfigure the service to use a unique Diffie-Hellman moduli of 2048 bits or greater.

Continue reading →

Link-Local Multicast Name Resolution (LLMNR) Detection

 Nessus Output

Synopsis :

The remote device supports LLMNR.

Description :

The remote device answered to a Link-local Multicast Name Resolution
(LLMNR) request. This protocol provides a name lookup service similar
to NetBIOS or DNS. It is enabled by default on modern Windows
versions.

Reported Risk factor by Nessus: None
In my option the severity should be much higher.

Continue reading →

MS15-034: Vulnerability in HTTP.sys Could Allow Remote Code Execution (3042553)

Nessus Output

Description

The version of Windows running on the remote host is affected by a vulnerability in the HTTP protocol stack (HTTP.sys) due to improperly parsing crafted HTTP requests. A remote attacker can exploit this to execute arbitrary code with System privileges.

Continue reading →

IPMI v2.0 Password Hash Disclosure

Nessus Output

Description
The remote host supports IPMI v2.0. The Intelligent Platform Management Interface (IPMI) protocol is affected by an information disclosure vulnerability due to the support of RMCP+ Authenticated Key-Exchange Protocol (RAKP) authentication. A remote attacker can obtain password hash information for valid user accounts via the HMAC from a RAKP message 2 response from a BMC.

Continue reading →

SolarWinds Virtualization Manager

Description

A virtualization manager is a virtualization environment management application that provides capabilities to create, edit, remove and monitor virtual machines. A virtualization manager provides a complete management solution for many different virtual machines simultaneously through a single application management console.
A virtualization manager is also known as a virtual machine manager, a virtual machine monitor or a hypervisor.
Source 

Continue reading →