A vulnerability in the popular open source BIND9 name server allows attackers to remotely trigger a server crash. According to the error report, a single specially crafted "dynamic update" packet is all that is required to prevent IP addresses from being translated into server addresses. Authorised name-servers use dynamic updates to add, or remove, resource records to, or from, a zone.. This DoS problem presents a particular threat because attackers don't require any authentication to exploit the hole, and because the server doesn't need to be specially configured for processing dynamic updates. However, according to the vendor, Internet Systems Consortium (ISC), the attack is only successful in systems where BIND has been set up as a master for a zone The link for this article located at H Security is no longer available. . A vulnerability in BIND9 DNS server exposes it to remote denial of service attacks without requiring user credentials, resulting in system failures.. BIND9 Attack, Name Server Threat, Denial of Service, Open Source Threat. . LinuxSecurity.com Team
X-windows, with or without the font server (XFS) running can be crashed remotely via Mozilla when fonts are set to an unnaturally large size with CSS (Cascading Style Sheets), Tom Vogt of lemuria.org has reported.. . .. X-windows, with or without the font server (XFS) running can be crashed remotely via Mozilla when fonts are set to an unnaturally large size with CSS (Cascading Style Sheets), Tom Vogt of lemuria.org has reported. An X bug allows all available memory to be consumed, which causes the system to freeze. The behavior can be duplicated with applications like the Gimp, we're told, but these aren't remotely exploitable. But with Mozilla, a pest can easily set up a malicious Web site which will crash unsuspecting Tuxers' boxen and cause any unsaved data in open apps to go away. See the Mozilla: Remote DoS vulnerability on LinuxSecurity. . The X-Window system is vulnerable to remote exploitation through Firefox when font sizes are manipulated to extreme dimensions, creating a serious security risk.. X-windows DoS, Remote Crash, Memory Exhaustion Attack, Mozilla Vulnerability. . LinuxSecurity.com Team
Get the latest Linux and open source security news straight to your inbox.