Ethereal: Buffer overflow in OSPF protocol dissector
Gentoo Linux Security Advisory
||GLSA 200512-06 / Ethereal
||December 14, 2005
||December 14, 2005: 01
All supported architectures
Ethereal is missing bounds checking in the OSPF protocol dissector that
could lead to abnormal program termination or the execution of arbitrary
Ethereal is a feature-rich network protocol analyzer. It provides
protocol analyzers for various network flows, including one for Open
Shortest Path First (OSPF) Interior Gateway Protocol.
iDEFENSE reported a possible overflow due to the lack of bounds
checking in the dissect_ospf_v3_address_prefix() function, part of the
OSPF protocol dissector.
An attacker might be able to craft a malicious network flow that
would crash Ethereal. It may be possible, though unlikely, to exploit
this flaw to execute arbitrary code with the permissions of the user
running Ethereal, which could be the root user.
There is no known workaround at this time.
All Ethereal users should upgrade to the latest version:
Code Listing 3.1: Resolution
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-analyzer/ethereal-0.10.13-r2"