CVE-2017-6156

moderate-risk
Published 2018-04-13

When the F5 BIG-IP 12.1.0-12.1.1, 11.6.0-11.6.1, 11.5.1-11.5.5, or 11.2.1 system is configured with a wildcard IPSec tunnel endpoint, it may allow a remote attacker to disrupt or impersonate the tunnels that have completed phase 1 IPSec negotiations. The attacker must possess the necessary credentials to negotiate the phase 1 of the IPSec exchange to exploit this vulnerability; in many environment this limits the attack surface to other endpoints under the same administration.

Do I need to act?

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0.39% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.4/10 Medium
NETWORK / HIGH complexity

Affected Products (20)

Affected Vendors

F5

References (2)

Vendor Advisory https://support.f5.com/csp/article/K05263202
Vendor Advisory https://support.f5.com/csp/article/K05263202
45
/ 100
moderate-risk
Severity 20/34 · Moderate
Exploitability 1/34 · Minimal
Exposure 24/34 · High