[NEWS] XORP OSPFv2 DoS
- From: SecuriTeam <support@xxxxxxxxxxxxxx>
- Date: 18 Oct 2006 11:59:33 +0200
The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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XORP OSPFv2 DoS
------------------------------------------------------------------------
SUMMARY
XORP is "the eXtensible Open Router Platform". A vulnerability in the way
XORP handles incoming OSPFv2 requests allows remote attackers to cause the
program to no longer respond to legitimate requests effectively causing a
denial of service against the product.
DETAILS
OSPF carries link state information using Link State Advertisements. Each
LSA contains a length field as well as a checksum. XORP performs a
checksum verification when processing an LSA. During the checksum
verification, the length field is used to calculate the payload. An
invalid length field causes an out of bounds read, causing the OSPF daemon
to crash.
Vendor Response / Solution:
Apply the relevant patch to your XORP system and follow vendor
instructions.
[XORP 1.2]
# wget http://www.xorp.org/patches/SA-06:01/xorp_sa_06:01.ospf_1.2.patch
[XORP 1.3]
# wget http://www.xorp.org/patches/SA-06:01/xorp_sa_06:01.ospf_1.3.patch
History:
10/13/06 - First contact with vendor
10/16/06 - Patch available
10/17/06 - Advisory released
ADDITIONAL INFORMATION
The information has been provided by Mu Security.
The original article can be found at:
<http://labs.musecurity.com/advisories/MU-200610-01.txt>
http://labs.musecurity.com/advisories/MU-200610-01.txt
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