Ruby: Denial of Service vulnerability — GLSA 200612-21

The Ruby cgi.rb CGI library is vulnerable to a Denial of Service attack.

Affected packages

Background

Ruby is a dynamic, open source programming language with a focus on simplicity and productivity.

Description

The read_multipart function of the CGI library shipped with Ruby (cgi.rb) does not properly check boundaries in MIME multipart content. This is a different issue than GLSA 200611-12.

Impact

The vulnerability can be exploited by sending the cgi.rb library a crafted HTTP request with multipart MIME encoding that contains a malformed MIME boundary specifier. Successful exploitation of the vulnerability causes the library to go into an infinite loop.

Workaround

There is no known workaround at this time.

Resolution

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=dev-lang/ruby-1.8.5_p2"

References

• CVE-2006-6303

Release date
December 20, 2006

Latest revision
December 20, 2006: 01

Severity
normal

Exploitable
remote

Bugzilla entries

• 157048