Ubuntu Security Notice USN-394-1
7th December, 2006
ruby1.8 vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 6.10
- Ubuntu 6.06 LTS
- Ubuntu 5.10
Details
An error was found in Ruby's CGI library that did not correctly quote
the boundary of multipart MIME requests. Using a crafted HTTP request,
a remote user could cause a denial of service, where Ruby CGI
applications would end up in a loop, monopolizing a CPU.
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 6.10:
- libruby1.8 1.8.4-5ubuntu1.2
- Ubuntu 6.06 LTS:
- libruby1.8 1.8.4-1ubuntu1.3
- Ubuntu 5.10:
- libruby1.8 1.8.2-9ubuntu1.4
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system upgrade is sufficient to effect the
necessary changes.