Ubuntu Security Notice USN-371-1
1st November, 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
- Ubuntu 5.04
Details
An error was found in Ruby's CGI library that did not correctly check
for the end 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 1.8.4-5ubuntu1.1
- Ubuntu 6.06 LTS:
- libruby1.8 1.8.4-1ubuntu1.2
- Ubuntu 5.10:
- libruby1.8 1.8.2-9ubuntu1.3
- Ubuntu 5.04:
- libruby1.8 1.8.1+1.8.2pre4-1ubuntu0.5
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.