View at Official ubuntu advisory, NVD, CVE.org · CVE detail
Freshness: upstream tracker timestamp is available; use API updated time as primary recency signal.
CVE-2012-4522 medium priority: Ubuntu including 3 source packages (ruby1.8, ruby1.9, ruby1.9.1), 21 status rows across 7 suites (hardy, lucid, natty, oneiric, precise, quantal, upstream): not-affected 9, DNE 5, released 4, ignored 2, needs-triage 1.
The rb_get_path_check function in file.c in Ruby 1.9.3 before patchlevel 286 and Ruby 2.0.0 before r37163 allows context-dependent attackers to create files in unexpected locations or with unexpected names via a NUL byte in a file path.