# CVE-2016-10396: ipsec-tools: The racoon daemon in IPsec-Tools 0.8.2 contains a remotely exploitable computational-complexity attack when parsing a...

CVE-2016-10396 is fixed in 2 products on 1 platform, first by ipsec-tools 1:0.8.2+20140711-10, released July 4, 2017. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2016-10396
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0293
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 4, 2017

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | ipsec-tools Ubuntu 18.04.6 LTS (bionic) | 1:0.8.2+20140711-10 | [ipsec-tools 1:0.8.2+20140711-10](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-ipsec-tools-1-0.8.2-20140711-10.md) | Jul 4, 2017 |
| Linux | racoon Ubuntu 18.04.6 LTS (bionic) | 1:0.8.2+20140711-10 | [racoon 1:0.8.2+20140711-10](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-racoon-1-0.8.2-20140711-10.md) | Jul 4, 2017 |

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Data as of 2026-11-07T06:34:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo