CVE-2008-2662: Canonical Ubuntu Linux

High severity, CVSS 10.0. EPSS: 4.3% chance of exploitation in the next 30 days.

Multiple integer overflows in the rb_str_buf_append function in Ruby 1.8.4 and earlier, 1.8.5 before 1.8.5-p231, 1.8.6 before 1.8.6-p230, 1.8.7 before 1.8.7-p22, and 1.9.0 before 1.9.0-2 allow context-dependent attackers to execute arbitrary code or cause a denial of service via unknown vectors that trigger memory corruption, a different issue than CVE-2008-2663, CVE-2008-2664, and CVE-2008-2725. NOTE: as of 20080624, there has been inconsistent usage of multiple CVE identifiers related to Ruby. This CVE description should be regarded as authoritative, although it is likely to change.

Affected products

• Canonical Ubuntu Linux: version 6.06 only; version 7.04 only; version 7.10 only; version 8.04 only
• Debian Debian Linux: version 4.0 only
• Ruby-Lang Ruby: up to and including 1.8.4; after 1.8.5, before 1.8.5.231 (fixed in 1.8.5.231); from 1.8.6, before 1.8.6.230 (fixed in 1.8.6.230); from 1.8.7, before 1.8.7.22 (fixed in 1.8.7.22); from 1.9.0, before 1.9.0.2 (fixed in 1.9.0.2)

Published 2008-06-24. Last modified 2026-06-16.