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.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://secunia.com/advisories/43548 | third party advisory vendor advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=705194 | |
| http://secunia.com/advisories/44862 | third party advisory vendor advisory |
| http://www.securityfocus.com/bid/46618 | vdb entry |
| https://gitweb.torproject.org/tor.git/commit/43414eb98821d3b5c6c65181d7545ce938f82c8e | patch |
| http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061258.html | vendor advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=705192 | patch |
| https://lists.torproject.org/pipermail/tor-announce/2011-February/000000.html | mailing list patch |