The flaw in Sun Solaris' Telnet framework lets hackers try to log into computer systems as the user or administrator, executing commands remotely.
A security company has found what appears to be a worm that is exploiting a verified zero-day bug in Sun Microsystems' Solaris 10 and 11.
The Sun Solaris Telnet worm attempts to log into computer systems as the user or administrator, enabling it to execute commands and move on, according to Arbor Network's Security Engineering and Response Team. The security group said it identified the flaw using its Atlas project. The software deploys sensors into service providers' networks to collect data on malware exploits.
"This morning on Atlas, we saw a pair of hosts scanning for Telnet servers," writes Jose Nazario, a software and security engineer with Arbor, in his blog. "While this may seem like a throwback to days gone by, and maybe someone is starting from scratch in their exploit activity, this is related to a recent Solaris bug, specifically CVE-2007-0882 (the telnet "-froot" bug).
The vulnerability -- which the SANS Institute earlier this month called a "major zero-day bug" -- allows hackers to easily gain remote access to computers running the Solaris operating systems. The problem lies in the way Telnet, a network protocol, uses parameters during the authentication process, said Johannes Ullrich in a previous interview with InformationWeek. Ullrich is the CTO for the Internet Storm Center, a cooperative cyberthreat-monitoring and alert system.
By adding simple text to the Telnet command, Ullrich explained that the system will skip asking for a user name and password. If the systems are installed out of the box, they automatically come Telnet-enabled.
Solaris 10 came out in 2005, and more than 7 million users have reportedly registered for it with Sun. Solaris 11, or what Sun code-named Solaris Next, is in beta testing.
A Sun spokesman explained that earlier versions of Solaris 10 had Telnet automatically enabled out of the box, but the latest version does not. He says for both the latest version of Solaris 10 and for the beta version of Solaris 11, users would have to specifically turn Telnet on to enable it. He adds that Sun is recommending that customers use Solaris Secure Shell as the protocol of choice.
Arbor's Nazario says the worm tries to log into systems as the users "lp" or "adm" and then executes several shell commands "to set up shop and keep on truckin'." He calls the attack "very old school."
How Enterprises Are Attacking the IT Security EnterpriseTo learn more about what organizations are doing to tackle attacks and threats we surveyed a group of 300 IT and infosec professionals to find out what their biggest IT security challenges are and what they're doing to defend against today's threats. Download the report to see what they're saying.
Infographic: The State of DevOps in 2017Is DevOps helping organizations reduce costs and time-to-market for software releases? What's getting in the way of DevOps adoption? Find out in this InformationWeek and Interop ITX infographic on the state of DevOps in 2017.
IT Strategies to Conquer the CloudChances are your organization is adopting cloud computing in one way or another -- or in multiple ways. Understanding the skills you need and how cloud affects IT operations and networking will help you adapt.