CVE-2016-10396

high

Description

The racoon daemon in IPsec-Tools 0.8.2 contains a remotely exploitable computational-complexity attack when parsing and storing ISAKMP fragments. The implementation permits a remote attacker to exhaust computational resources on the remote endpoint by repeatedly sending ISAKMP fragment packets in a particular order such that the worst-case computational complexity is realized in the algorithm utilized to determine if reassembly of the fragments can take place.

References

https://gnats.netbsd.org/cgi-bin/query-pr-single.pl?number=51682

http://cvsweb.netbsd.org/bsdweb.cgi/src/crypto/dist/ipsec-tools/src/racoon/isakmp_frag.c?only_with_tag=MAIN

http://cvsweb.netbsd.org/bsdweb.cgi/src/crypto/dist/ipsec-tools/src/racoon/isakmp_frag.c.diff?r1=1.5&r2=1.5.36.1

Details

Source: Mitre, NVD

Published: 2017-07-06

Updated: 2017-07-27

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High