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CVE-2016-10396

The racoon daemon in IPsec-Tools 0.8.2 contains a remotely exploitable computational-complexity...

7.5 HighFix available

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

2.93%Up 1.8 points since Feb 4, 2022
90%50%10%1%

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 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0
7.8 HighAV: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 HighCVSS: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 HighCVSS: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

Affected packages
PackageAffectedFixed
ipsec-tools
Debian: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-tools
SUSE:Linux Enterprise Server 11 SP4
before 0.7.3-1.38.3.1
0.7.3-1.38.3.1
ipsec-tools
SUSE:Linux Enterprise Server for SAP Applications 11 SP4
before 0.7.3-1.38.3.1
0.7.3-1.38.3.1
ipsec-tools
SUSE:Linux Enterprise Server for Raspberry Pi 12 SP2
before 0.8.0-19.3.1
0.8.0-19.3.1
ipsec-tools
SUSE:Linux Enterprise Server 12 SP2
before 0.8.0-19.3.1
0.8.0-19.3.1
ipsec-tools
SUSE:Linux Enterprise Server for SAP Applications 12 SP2
before 0.8.0-19.3.1
0.8.0-19.3.1
ipsec-tools
SUSE:Linux Enterprise Server 12 SP3
before 0.8.0-19.3.1
0.8.0-19.3.1
ipsec-tools
SUSE:Linux Enterprise Server for SAP Applications 12 SP3
before 0.8.0-19.3.1
0.8.0-19.3.1
ipsec-tools
Ubuntu:16.04:LTS
All versions, plus listed versions
1:0.8.2+20140711-41:0.8.2+20140711-5
None known
ipsec-tools
Ubuntu:18.04:LTS
before 1:0.8.2+20140711-10
1:0.8.2+20140711-10

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE 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

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