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Algorithmic Complexity Affecting ipsec-tools package, versions <1:0.8.2+20140711-8+deb9u1

Severity

 Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.45% (75th percentile)

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  • Snyk IDSNYK-DEBIAN9-IPSECTOOLS-382288
  • published6 Jul 2017
  • disclosed6 Jul 2017
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Introduced: 6 Jul 2017

CVE-2016-10396  (opens in a new tab)
CWE-407  (opens in a new tab)

How to fix?

Upgrade Debian:9 ipsec-tools to version 1:0.8.2+20140711-8+deb9u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ipsec-tools package and not the ipsec-tools package as distributed by Debian. See How to fix? for Debian:9 relevant fixed versions and status.

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.