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John Lemke

Hackers Using 'Shellshock' Bash Vulnerability to Launch Botnet Attacks - 0 views

thehackernews.com/...ash-Vulnerability-exploit.html

2014.09.29-TNN indienationnews vulnerability bash hackers security vunerability

shared by John Lemke on 27 Sep 14 - No Cached
  • Researchers on Thursday discovered a critical remotely exploitable vulnerability in the widely used command-line shell GNU Bourne Again Shell (Bash), dubbed "Shellshock" which affects most of the Linux distributions and servers worldwide, and may already have been exploited in the wild to take over Web servers as part of a botnet that is currently trying to infect other servers as well.
  • the vulnerability is already being used maliciously by the hackers.
  • There is as of yet no official patch that completely addresses both vulnerabilities, including the second, which allows an attacker to overwrite files on the targeted system.
  • ...3 more annotations...
  • It's things like CGI scripts that are vulnerable, deep within a website (like CPanel's /cgi-sys/defaultwebpage.cgi)," Graham wrote in a blog post. "Getting just the root page is the thing least likely to be vulnerable. Spidering the site and testing well-known CGI scripts (like the CPanel one) would give a lot more results—at least 10x." In addition, Graham said, "this thing is clearly wormable and can easily worm past firewalls and infect lots of systems. One key question is whether Mac OS X and iPhone DHCP service is vulnerable—once the worm gets behind a firewall and runs a hostile DHCP server, that would be 'game over' for large networks."
  • 32 ORACLE PRODUCTS VULNERABLE
  • PATCH ISSUED, BUT INCOMPLETE
  • John Lemke on 27 Sep 14
     
    "Researchers on Thursday discovered a critical remotely exploitable vulnerability in the widely used command-line shell GNU Bourne Again Shell (Bash), dubbed "Shellshock" which affects most of the Linux distributions and servers worldwide, and may already have been exploited in the wild to take over Web servers as part of a botnet that is currently trying to infect other servers as well."
John Lemke

Java-based malware driving DDoS botnet infects Windows, Mac, Linux devices | Ars Technica - 0 views

arstechnica.com/...ects-windows-mac-linux-devices

2014 malware ddos windows mac linux technology tech security botnet

shared by John Lemke on 29 Jan 14 - No Cached
  • takes hold of computers by exploiting CVE-2013-2465, a critical Java vulnerability that Oracle patched in June. The security bug is present on Java 7 u21 and earlier. Once the bot has infected a computer, it copies itself to the autostart directory of its respective platform to ensure it runs whenever the machine is turned on. Compromised computers then report to an Internet relay chat channel that acts as a command and control server.
  • The botnet is designed to conduct distributed denial-of-service attacks on targets of the attackers' choice. Commands issued in the IRC channel allow the attackers to specify the IP address, port number, intensity, and duration of attacks.
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