USN-621-1: Ruby vulnerabilities

Ubuntu Security Notice USN-621-1

26th June, 2008

ruby1.8 vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

Ubuntu 8.04 LTS
Ubuntu 7.10
Ubuntu 7.04
Ubuntu 6.06 LTS

Software description

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 version:

Ubuntu 8.04 LTS:: 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 LTS:: ruby1.8 1.8.4-1ubuntu1.5; libruby1.8 1.8.4-1ubuntu1.5

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.

References

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