Menu
Windows vulnerability can compromise credentials

Windows vulnerability can compromise credentials

An old flaw in Windows can still be exploited, according to Cylance

A vulnerability found in the late 1990s in Microsoft Windows can still be used to steal login credentials, according to a security advisory released Monday.

A researcher with security vendor Cylance, Brian Wallace, found a new way to exploit a flaw originally found in 1997. Wallace wrote on Monday the flaw affects any PC, tablet or server running Windows and could compromise as many as 31 software programs.

He wrote the flaw was not resolved long ago, but that "we hope that our research will compel Microsoft to reconsider the vulnerabilities."

The vulnerability, called Redirect to SMB, can be exploited if an attacker can intercept communications with a Web server using a man-in-the-middle attack.

Windows or a program running on Windows can then be directed to communicate with a malicious SMB (server message block) server, which can then force an application to divulge the username, domain and hashed password of the person logged in, Wallace wrote.

Cylance disclosed its findings on Feb. 27 to the Computer Emergency Readiness Team at Carnegie Melon University, which issued an advisory.

CERT wrote that although the collected credentials are encrypted, attackers could try brute-force techniques -- which involves trying to guess a password -- until access is gained.

There are some mitigations. An attacker needs to be on the same network as a victim. It is also possible to block an attack by stopping outbound traffic on TCP ports 139 and 445, Wallace wrote.

Microsoft said it didn't agree with Cylance's findings, saying it provided guidance on the issue to businesses six years ago. "Several factors would need to come together for this type of cyberattack to work, such as success in luring a person to enter information into a fake website," it said. "We encourage people to avoid opening links in emails from senders that they don't recognize or visiting unsecure sites."

Send news tips and comments to jeremy_kirk@idg.com. Follow me on Twitter: @jeremy_kirk

Follow Us

Join the New Zealand Reseller News newsletter!

Error: Please check your email address.

Tags CylanceMicrosoftsecurityExploits / vulnerabilities

Slideshows

Top 50 defining moments of the New Zealand channel in 2016

Top 50 defining moments of the New Zealand channel in 2016

Reseller News looks back on a tumultuous 12 months for the New Zealand channel, assessing the fallout from a year of sizeable industry change. Whether it be local or global mergers and acquisitions, distribution deals or job changes, the channel that started the year differs somewhat to the one set to finish it - Reseller News assesses the key moments that made 2016.​

Top 50 defining moments of the New Zealand channel in 2016
​Hewlett Packard Enterprise honours high achieving NZ channel

​Hewlett Packard Enterprise honours high achieving NZ channel

Hewlett Packard Enterprise honoured its top performing Kiwi partners at the second running of its HPE Partner Awards in New Zealand, held at a glitzy ceremony in Auckland. Recognising excellence across eight categories - from distributors to resellers - the tech giant celebrated its first year as a standalone company, following its official split from HP in 2015.

​Hewlett Packard Enterprise honours high achieving NZ channel
Nutanix treats channel partners to Christmas cruise

Nutanix treats channel partners to Christmas cruise

Nutanix recently took to the seas for a Christmas Cruise around Sydney Harbour with its Australia and New Zealand staff, customers and partners to celebrate a stellar year for the vendor. With the sun out, they were all smiles and mingled over drinks and food.

Nutanix treats channel partners to Christmas cruise
Show Comments