Feeds

OpenBSD exploit gets serious

Gives crackers server access

  • alert
  • submit to reddit

Choosing a cloud hosting partner with confidence

An esoteric buffer overflow bug in OpenBSD has been upgraded in importance after it was discovered that, in certain conditions, it could allow a cracker to gain remote access to a server.

Users are recommended to apply a patch to fix the one-byte buffer overflow vulnerability present in an OpenBSD service called ftpd(8). The issue particularly affects non-anonymous FTP (File Transfer Protocol) servers, and administrators of these services are also been encouraged to use more secure transport mechanisms.

For a system to be vulnerable, ftpd must have been enabled by the administrator because by default OpenBSD ships with the service turned off - though it is a frequently used service.

The potential risk from the vulnerability is minimised by the fact that to exploit the problem a cracker must have write access to at least one directory.

These factors led to the importance of the bug to be downplayed at first. However the discovery, earlier this week, of a publicly available exploit of the vulnerability led OpenBSD developers to issue a fresh advisory on the issue.

The vulnerability affects OpenBSD versions through 2.8 and NetBSD, though it is not believed to affect FreeBSD.

OpenBSD administrators using ftpd are advised to disable the service and then apply the patch, available here, to their OpenBSD 2.8 source tree. ®

Providing a secure and efficient Helpdesk

More from The Register

next story
Preview redux: Microsoft ships new Windows 10 build with 7,000 changes
Latest bleeding-edge bits borrow Action Center from Windows Phone
Google opens Inbox – email for people too thick to handle email
Print this article out and give it to someone tech-y if you get stuck
Microsoft promises Windows 10 will mean two-factor auth for all
Sneak peek at security features Redmond's baking into new OS
UNIX greybeards threaten Debian fork over systemd plan
'Veteran Unix Admins' fear desktop emphasis is betraying open source
Entity Framework goes 'code first' as Microsoft pulls visual design tool
Visual Studio database diagramming's out the window
Google+ goes TITSUP. But WHO knew? How long? Anyone ... Hello ...
Wobbly Gmail, Contacts, Calendar on the other hand ...
DEATH by PowerPoint: Microsoft warns of 0-day attack hidden in slides
Might put out patch in update, might chuck it out sooner
Ubuntu 14.10 tries pulling a Steve Ballmer on cloudy offerings
Oi, Windows, centOS and openSUSE – behave, we're all friends here
prev story

Whitepapers

Choosing cloud Backup services
Demystify how you can address your data protection needs in your small- to medium-sized business and select the best online backup service to meet your needs.
Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Storage capacity and performance optimization at Mizuno USA
Mizuno USA turn to Tegile storage technology to solve both their SAN and backup issues.