Ubuntu 6.06 LTS / 7.04 / 7.10 / 8.04 LTS : ruby1.8 vulnerabilities (USN-621-1)
Critical Nessus Plugin ID 33390
SynopsisThe remote Ubuntu host is missing one or more security-related patches.
DescriptionDrew 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).
Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
SolutionUpdate the affected packages.