{"id":"CVE-2017-6156","aliases":["EUVD-2017-15221","GHSA-vcc3-5p5p-ggh7"],"status":"published","title":"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...","description":"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.","severity":{"version":"3.0","score":6.4,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00905,"percentile":0.60053,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2018-04-13T13:00:00Z","modified":"2026-06-17T01:21:51Z","products":[{"vendor":"f5","product":"big-ip (ltm, aam, afm, analytics, apm, asm, dns, edge gateway, gtm, link controller, pem, webaccelerator, websafe)"},{"vendor":"f5","product":"big-ip_access_policy_manager"},{"vendor":"f5","product":"big-ip_advanced_firewall_manager"},{"vendor":"f5","product":"big-ip_analytics"},{"vendor":"f5","product":"big-ip_application_acceleration_manager"},{"vendor":"f5","product":"big-ip_application_security_manager"},{"vendor":"f5","product":"big-ip_domain_name_system"},{"vendor":"f5","product":"big-ip_edge_gateway"},{"vendor":"f5","product":"big-ip_global_traffic_manager"},{"vendor":"f5","product":"big-ip_link_controller"},{"vendor":"f5","product":"big-ip_local_traffic_manager"},{"vendor":"f5","product":"big-ip_policy_enforcement_manager"},{"vendor":"f5","product":"big-ip_webaccelerator"},{"vendor":"f5","product":"big-ip_websafe"},{"vendor":"f5 networks, inc.","product":"big-ip (ltm, aam, afm, analytics, apm, asm, dns, edge gateway, gtm, link controller, pem, webaccelerator, websafe)"}],"references":[{"url":"https://support.f5.com/csp/article/K05263202","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-6156"},{"url":"https://github.com/advisories/GHSA-vcc3-5p5p-ggh7"}],"sources":{"cve":[{"id":"CVE-2017-6156","description":"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.","status":"published","published":"2018-04-13T13:00:00Z","modified":"2024-09-16T19:15:00.313Z","updated_at":"2026-11-02T14:33:16.916541Z"}],"euvd":[{"id":"EUVD-2017-15221","description":"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.","status":"published","published":"2018-04-13T13:00:00Z","modified":"2024-09-16T19:15:00Z","updated_at":"2026-11-03T00:55:24.732716Z"}],"ghsa":[{"id":"GHSA-vcc3-5p5p-ggh7","title":"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...","description":"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.","status":"published","published":"2022-05-13T01:46:26Z","modified":"2023-02-02T05:01:30Z","cvss":[{"version":"3.0","score":6.4,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H","level":"medium"}],"updated_at":"2026-11-02T14:51:11.772726Z"}],"nvd":[{"id":"CVE-2017-6156","description":"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.","status":"published","published":"2018-04-13T13:29:00.377Z","modified":"2026-06-17T01:21:51.5Z","cvss":[{"version":"3.0","score":6.4,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":6,"vector":"AV:N/AC:M/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:04:17.032862Z"}]}}