| Name | CVE-2016-10396 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more) |
| References | DLA-1044-1 |
| NVD severity | high (attack range: remote) |
| Debian Bugs | 867986 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| ipsec-tools (PTS) | wheezy | 1:0.8.0-14+deb7u1 | vulnerable |
| wheezy (security) | 1:0.8.0-14+deb7u3 | fixed | |
| jessie (security), jessie | 1:0.8.2+20140711-2+deb8u1 | vulnerable | |
| stretch | 1:0.8.2+20140711-8 | vulnerable | |
| buster, sid | 1:0.8.2+20140711-10 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| ipsec-tools | source | (unstable) | 1:0.8.2+20140711-9 | high | 867986 | |
| ipsec-tools | source | wheezy | 1:0.8.0-14+deb7u2 | high | DLA-1044-1 |
[stretch] - ipsec-tools <no-dsa> (Will be fixed via point release)
[jessie] - ipsec-tools <no-dsa> (Will be fixed via point release)
NetBSD applied patch: 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
NetBSD Problem report: https://gnats.netbsd.org/cgi-bin/query-pr-single.pl?number=51682
Patch disputed, cf. https://bugzilla.novell.com/show_bug.cgi?id=1047443#c1
Updated patch: https://anonscm.debian.org/cgit/pkg-ipsec-tools/pkg-ipsec-tools.git/plain/debian/patches/CVE-2016-10396.patch?id=62ac12648a4eb7c5ba5dba0f81998d1acf310d8b