A stack-based buffer overflow in CTorrent might allow a remote attacker to execute arbitrary code or cause a Denial of Service condition.

Announced

2013-11-20

Revised

2013-11-22 (revision 2)

Access

remote

Bugs

#266953

Advisory

https://security.gentoo.org/glsa/201311-11

Affected packages

Package	Arch	Vulnerable	Unaffected
net-p2p/ctorrent	*	< 3.3.2-r1	>= 3.3.2-r1

Background

CTorrent is a BitTorrent client implemented in C++ to be lightweight and quick.

Description

CTorrent contains a stack-based buffer overflow in the btFiles::BuildFromMI function in trunk/btfiles.cpp.

Impact

A remote attacker could entice a user to open a specially crafted torrent file using CTorrent, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All CTorrent users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-p2p/ctorrent-3.3.2-r1"

References

• CVE-2009-1759