oss-sec mailing list archives
Re: CVE Request -- Transmission v1.92
From: Josh Bressers <bressers () redhat com>
Date: Thu, 1 Apr 2010 14:41:13 -0400 (EDT)
----- "Jan Lieskovsky" <jlieskov () redhat com> wrote:
Hi Steve, vendors, Transmission upstream has recently released latest, v1.92 version: [1] http://trac.transmissionbt.com/wiki/Changes fixing one (potentially two) security issues: a, Fix potential buffer overflow when adding maliciously-crafted magnet links References: [2] http://trac.transmissionbt.com/ticket/2965 [3] http://trac.transmissionbt.com/wiki/Changes [4] http://bugs.gentoo.org/show_bug.cgi?id=309831
Use CVE-2010-0748 for this one. I'm calling it an arbitrary memory write. It's not really a buffer overflow.
-- b, Fix possible data corruption issue caused by data sent by bad peers during endgame (this one I am not completely sure of, but when looking at the relevant bug record: [5] http://trac.transmissionbt.com/ticket/1242 there is written: [6] http://trac.transmissionbt.com/ticket/1242#comment:1 "My theory is that for some reason Transmission will download a corrupt part from someone but not realize it until you do a manual verify. At this point T will recognize the bad part and redownload it from the same person, which just causes the problem again." so to prevent someone from successfully downloading content of some torrent file, for an attacker to should be enough to download a part of it, corrupt it and share it. Not sure about the algorithm, Transmission decides which torrent to retrieve content from, but if it is deterministic / predictable behavior / algorithm, such attack could succeed). References: [7] http://trac.transmissionbt.com/ticket/1242 [8] http://trac.transmissionbt.com/ticket/1242#comment:1 [9] http://trac.transmissionbt.com/wiki/Changes
I'm giving this issue a CVE ID too. I think this issue is a bit on the fence, but given a malicious client could corrupt download data in a manner that is hard to fix, it should get one. Use CVE-2010-0749 Thanks. -- JB
Current thread:
- Re: CVE Request -- Transmission v1.92 Josh Bressers (Apr 01)