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-2011-4602 low priority: Ubuntu including 1 source packages (pidgin), 7 status rows across 7 suites (hardy, lucid, maverick, natty, oneiric, precise, upstream): released 3, ignored 2, needs-triage 1, not-affected 1.
The XMPP protocol plugin in libpurple in Pidgin before 2.10.1 does not properly handle missing fields in (1) voice-chat and (2) video-chat stanzas, which allows remote attackers to cause a denial of service (application crash) via a crafted message.