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-2011-4968 low priority: Ubuntu including 1 source packages (nginx), 11 status rows across 11 suites (hardy, lucid, oneiric, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid): ignored 10, released 1.
nginx http proxy module does not verify peer identity of https origin server which could facilitate man-in-the-middle attack (MITM)