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-2011-1924 low priority: Ubuntu including 1 source packages (tor), 6 status rows across 6 suites (hardy, lucid, maverick, natty, oneiric, upstream): DNE 2, not-affected 2, ignored 1, released 1.
Buffer overflow in the policy_summarize function in or/policies.c in Tor before 0.2.1.30 allows remote attackers to cause a denial of service (directory authority crash) via a crafted policy that triggers creation of a long port list.