CVE-2016-10396
The racoon daemon in IPsec-Tools 0.8.2 contains a remotely exploitable computational-complexity...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
7.5
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.
- Record
CVE-2016-10396- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 7.8 High
AV:N/AC:L/Au:N/C:N/I:N/A:C - Weakness
- CWE-407
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2016-10396- Updated
- 2026-11-02
EUVDEUVD-2016-1578 No score
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.
- Record
EUVD-2016-1578- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-575v-phrx-cjcp
7.5
The racoon daemon in IPsec-Tools 0.8.2 contains a remotely exploitable computational-complexity...
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.
- Record
GHSA-575v-phrx-cjcp- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-407
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2016-10396
7.5
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.
- Record
UBUNTU-CVE-2016-10396- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVSUSE-SU-2018:0423-1 No score
Security update for ipsec-tools
This update for ipsec-tools fixes one issue.
This security issue was fixed:
- CVE-2016-10396: The racoon daemon contained a remotely exploitable computational-complexity attack when parsing and storing ISAKMP fragments that allowed a remote attacker to exhaust computational resources on the remote endpoint by repeatedly sending ISAKMP fragment packets in a particular order (bsc#1047443).
- Record
SUSE-SU-2018:0423-1- Updated
- 2026-11-02
OSVSUSE-SU-2018:0424-1 No score
Security update for ipsec-tools
This update for ipsec-tools fixes one issue.
This security issue was fixed:
- CVE-2016-10396: The racoon daemon contained a remotely exploitable computational-complexity attack when parsing and storing ISAKMP fragments that allowed a remote attacker to exhaust computational resources on the remote endpoint by repeatedly sending ISAKMP fragment packets in a particular order (bsc#1047443).
- Record
SUSE-SU-2018:0424-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
ipsec-toolsDebian:7 |
before 1:0.8.0-14+deb7u2, plus listed versions 1:0.8.0-141:0.8.0-14+deb7u1 |
1:0.8.0-14+deb7u2 |
ipsec-toolsSUSE:Linux Enterprise Server 11 SP4 |
before 0.7.3-1.38.3.1 | 0.7.3-1.38.3.1 |
ipsec-toolsSUSE:Linux Enterprise Server for SAP Applications 11 SP4 |
before 0.7.3-1.38.3.1 | 0.7.3-1.38.3.1 |
ipsec-toolsSUSE:Linux Enterprise Server for Raspberry Pi 12 SP2 |
before 0.8.0-19.3.1 | 0.8.0-19.3.1 |
ipsec-toolsSUSE:Linux Enterprise Server 12 SP2 |
before 0.8.0-19.3.1 | 0.8.0-19.3.1 |
ipsec-toolsSUSE:Linux Enterprise Server for SAP Applications 12 SP2 |
before 0.8.0-19.3.1 | 0.8.0-19.3.1 |
ipsec-toolsSUSE:Linux Enterprise Server 12 SP3 |
before 0.8.0-19.3.1 | 0.8.0-19.3.1 |
ipsec-toolsSUSE:Linux Enterprise Server for SAP Applications 12 SP3 |
before 0.8.0-19.3.1 | 0.8.0-19.3.1 |
ipsec-toolsUbuntu:16.04:LTS |
All versions, plus listed versions 1:0.8.2+20140711-41:0.8.2+20140711-5 |
None known |
ipsec-toolsUbuntu:18.04:LTS |
before 1:0.8.2+20140711-10 | 1:0.8.2+20140711-10 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2016-10396 is a high vulnerability (CVSS 7.5) in Ipsec-tools, published July 5, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.93%, the 87th percentile. Fixed in ipsec-tools 1:0.8.0-14+deb7u2.
References
cvsweb.netbsd.org/bsdweb.cgi/src/crypto/dist/ipsec-tools/src/racoon/isakmp_frag.c.diff?r1=1.5&r2=1.5.36.1
gnats.netbsd.org/cgi-bin/query-pr-single.pl?number=51682
cvsweb.netbsd.org/bsdweb.cgi/src/crypto/dist/ipsec-tools/src/racoon/isakmp_frag.c?only_with_tag=MAIN
nvd.nist.gov/vuln/detail/CVE-2016-10396
github.com/advisories/GHSA-575v-phrx-cjcp
suse.com/support/update/announcement/2018/suse-su-20180423-1