Latest news
Undocumented command DBCC SHOWTABLEAFFINITY('table') contains exploitable buffer overrun. Vulnerable software includes Microsoft SQL Server 2000 up to and including version 8.00.665 and all versions of Microsoft SQL Server 7. To exploit this issue one must be able to login into SQL Server and issue T-SQL commands against the RDBMS. When DBCC SHOWTABLEAFFINITY is called with parameter set to 1809 (1917 for version SQL Server 7) symbols, MSSQLSERVER service crashes and (if exploit was thoroughly crafted) attacker's code is executed in context of account used to start SQL Server service. After crash SQL Server error logs won't contain any records about the failure. Windows Event Log will contain log entry about unexpected termination of MSSQLSERVER service. Due to SQL Server architecture server administrators cannot selectively set permissions on DBCC commands, so it is not possible to prevent users from calling this command. At the same time, some DBCC command are protected from being called by ordinal database users.
Download the paper in PDF format here.
Spotlight
IT security jobs: What's in demand and how to meet it
Posted on 15 May 2013. | Let's say you want a career in information security, where do you start? What credentials do you need? What are employers looking for? Read on to find some answers.
Is Microsoft is reading your Skype communications?
Posted on 15 May 2013. | The question of whether Skype allows U.S. intelligence and law enforcement agencies to access the communications exchanged by its users has still not been adequately answered by Microsoft.
Internet Explorer best at blocking malware
Posted on 14 May 2013. | While Chrome’s malware download protection improved significantly, Internet Explorer 10 continues to outperform the other browsers with a block rate of 99.96%.
Researcher refuses to help Saudi telco to spy on people
Posted on 14 May 2013. | You would think that a Saudi Arabian telecom firm interested in monitoring its users' mobile communications would not be asking a well-known pro-privacy researcher for help, but you would be wrong.
Malicious browser extensions are hijacking Facebook accounts
Posted on 13 May 2013. | Facebook users - especially those in Brazil - are being targeted with malicious browser extensions trying to hijack Facebook profiles, warns Microsoft.
By subscribing to our early morning news update, you will receive a daily digest of the latest security news published on Help Net Security.
With over 500 issues so far, reading our newsletter every Monday morning will keep you up-to-date with security risks out there.
 |
