CVE-2016-10396: ipsec-tools Inefficient Algorithmic Complexity

Vulnerability summary

CVE-2016-10396 is a high (CVSS 7.8) Inefficient Algorithmic Complexity vulnerability in ipsec-tools. EPSS estimates a 2.93% chance of exploitation in the next 30 days, higher than 86.8% of scored vulnerabilities.

Timeline

1. 06-07-2017
   PublishedVulnerability first disclosed.
2. 16-09-2024
   Last modifiedVulnerability information updated.

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.

• CWE-407Inefficient Algorithmic ComplexityAn algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an attacker, typically using crafted manipulations that ensure that the worst case is being reached.