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-2011-3150 high priority: Ubuntu including 1 source packages (software-center), 6 status rows across 6 suites (hardy, lucid, maverick, natty, oneiric, upstream): released 3, DNE 1, needs-triage 1, not-affected 1.
Software Center in Ubuntu 11.10, 11.04 10.10 does not properly validate server certificates, which allows remote attackers to execute arbitrary code or obtain sensitive information via a man-in-the-middle (MITM) attack.