Debian: DSA-2809-1 Urgent: Ruby Remote Exploit Vulnerability Alert

CVE-2013-1821

Ben Murphy discovered that unrestricted entity expansion in REXML
can lead to a Denial of Service by consuming all host memory.

CVE-2013-4073

William (B.J.) Snow Orvis discovered a vulnerability in the hostname
checking in Ruby's SSL client that could allow man-in-the-middle
attackers to spoof SSL servers via a crafted certificate issued by a
trusted certification authority.

CVE-2013-4164

Charlie Somerville discovered that Ruby incorrectly handled floating
point number conversion. If an application using Ruby accepted
untrusted input strings and converted them to floating point
numbers, an attacker able to provide such input could cause the
application to crash or, possibly, execute arbitrary code with the
privileges of the application.

For the oldstable distribution (squeeze), these problems have been fixed in
version 1.8.7.302-2squeeze2.

For the stable distribution (wheezy), these problems have been fixed in
version 1.8.7.358-7.1+deb7u1.

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