USN-621-1: Ruby vulnerabilities

Releases

• Ubuntu 8.04
• Ubuntu 7.10
• Ubuntu 7.04
• Ubuntu 6.06

Packages

• ruby1.8 -

Details

Drew Yao discovered several vulnerabilities in Ruby which lead to integer
overflows. If a user or automated system were tricked into running a
malicious script, an attacker could cause a denial of service or execute
arbitrary code with the privileges of the user invoking the program.
(CVE-2008-2662, CVE-2008-2663, CVE-2008-2725, CVE-2008-2726)

Drew Yao discovered that Ruby did not sanitize its input when using ALLOCA.
If a user or automated system were tricked into running a malicious script,
an attacker could cause a denial of service via memory corruption.
(CVE-2008-2664)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 8.04

• ruby1.8 - 1.8.6.111-2ubuntu1.1
• libruby1.8 - 1.8.6.111-2ubuntu1.1

Ubuntu 7.10

• ruby1.8 - 1.8.6.36-1ubuntu3.2
• libruby1.8 - 1.8.6.36-1ubuntu3.2

Ubuntu 7.04

• ruby1.8 - 1.8.5-4ubuntu2.2
• libruby1.8 - 1.8.5-4ubuntu2.2

Ubuntu 6.06

• ruby1.8 - 1.8.4-1ubuntu1.5
• libruby1.8 - 1.8.4-1ubuntu1.5

In general, a standard system upgrade is sufficient to effect the
necessary changes.

References

• CVE-2008-2725
• CVE-2008-2664
• CVE-2008-2662
• CVE-2008-2663
• CVE-2008-2726