Cisco flaw opens networks to attacks
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A router software bug could lead to denial-of-service attacks--but only techies could launch one, an analyst says.
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Flaw in the way the Net phone software handles Web links could enable an attacker to launch arbitrary code on some Macs.
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Technique lets intruders exploit flaws previously thought to be insignificant, says security researcher.
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Flaw could enable attackers to compromise usernames and passwords, security researcher warns, citing exploit on MySpace.
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The purpose of this article is to analyze a public exploit in a lab environment, see the alerts generated by an intrusion detection system, and then do some packet analysis of the malicious binary in order to better understand it.
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An intruder could manipulate a flaw in how the browsers handle image files to see where the user has been surfing.
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(InfoWorld) - If you haven't changed the default password on your home router, do so now. That's what researchers at Symantec and Indiana University are saying, after publishing the results of tests that show how attackers could take over your home router using malicious JavaScript code. For the attack to work, the bad guys would need a couple of things to go their way. First, the victim would have to visit a malicious Web site that served up the JavaScript. Second, the victim's router would have to still use the default password that it's pre-configured with it out of the box. In tests, the researchers were able to do things like change firmware and redirect a D-Link Systems DI-524 wireless router to look up Web sites from a DNS (Domain Name System) server of their choosing. They describe these attacks in a paper, authored by Sid Stamm and Markus Jakobsson of Indiana University, and Symantec's Zulfikar Ramzan. "By visiting a malicious Web page, a person can inadvertently open up his router for attack," the researchers write. "A Web site can attack home routers from the inside and mount sophisticated... attacks that may result in denial of service, malware infection, or identity theft." Once the router has been compromised, victims can be redirected to fraudulent Web sites, the researchers say. So instead of downloading legitimate Microsoft software updates, for example, they could be tricked into downloading malware. Instead of online banking, they could be giving up sensitive information to phishers. At the heart of the problem is the fact that consumer routers ship with simple, well-known default passwords, like "admin," which could be exploited by attackers. "Owners of home routers who set a moderately secure password -- one that is non-default and non-trivial to guess -- are immune to router manipulation via JavaScript," the paper states. The researchers blame router makers for shipping products with "poorly secure default settings." Vendors like D-Link and Cisco Systems are aware of the problem. "It's a concern to us," said Karen Sohl, a spokeswoman with Cisco's Linksys group. "We've shipped about 30 million routers and we want those 30 million customers to understand why it's so important to change [the default password]." Both Cisco and D-Link said they've taken steps to avoid this type of security problem. Over the past few years they've introduced step-by-step "wizard" software to configure their routers, and these products always suggest that the user come up with a unique password. The problem is that the routers still work if the password is left as default. And that's not likely to change anytime soon, according to Michael Scott, D-Link's technical media manager. Users wouldn't buy routers that forced them to enter unique passwords, he said. "That would only result in returned products, and then they would buy one of our competitors products," he said.
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Online attackers have briefly disrupted service on at least two of the 13 "root" servers that are used to direct traffic on the Internet.
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A flaw in the way the Firefox and Opera browsers handle an image file could allow an attacker to see what Web sites a person has visited.
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Code that takes advantage of a Safari flaw could leave an iPhone open to attack.
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Multiple vulnerabilities have been reported in version five of the widely-used Kerberos authentication protocol. The most serious could be exploited by crackers to gain root control to authentication servers.
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A critical security flaw has been discovered in WinAmp that exploits the stack-based buffer overflow vulnerability allowing attacks from hackers.
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Symantec has released firmware fixes for a string of critical security holes in its firewall/VPN and Gateway Security products which could be exploited to cause a denial of service, identify
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Universal plug and prey Security mavens have uncovered a design flaw in most home routers that allows attackers to remotely control the devices by luring an attached computer to a booby-trapped website.â¦
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Researchers say large numbers of wireless routers could be susceptible to a piggyback attack in dense urban areas.
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But don't just blame Vista New technology such as Windows Vista and IP v6 may solve some security problems but will bring new security threats as well, according to a senior Cisco security expert.â¦
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A flaw in Snort, the popular open-source intrusion detection system, could be used by attackers to run malicious code on vulnerable machines, several security organizations reported Monday.