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ReviewHigh

CVE-2017-6625

Cisco Firepower Threat Defense and Cisco ASA with FirePOWER Module, secure firewall threat defense

A "Cisco Firepower Threat Defense 6.0.0 through 6.2.2 and Cisco ASA with FirePOWER Module Denial of Service" vulnerability in the access control policy of Cisco Firepower System Software could allow an authenticated, remote attacker to cause an affected system to stop inspecting and processing packets, resulting in a denial of service (DoS) condition. The vulnerability is due to improper SSL policy handling by the affected software when packets are passed through the sensing interfaces of an affected system. An attacker could exploit this vulnerability by sending crafted packets through a t...

CVSS
7.1
EPSS
1.82%
77.3% percentile
CISA KEV
Not listed
Published
2017.05.04
PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability1.82%
Technical severityCVSS 7.1

Vulnerability overview

A "Cisco Firepower Threat Defense 6.0.0 through 6.2.2 and Cisco ASA with FirePOWER Module Denial of Service" vulnerability in the access control policy of Cisco Firepower System Software could allow an authenticated, remote attacker to cause an affected system to stop inspecting and processing packets, resulting in a denial of service (DoS) condition. The vulnerability is due to improper SSL policy handling by the affected software when packets are passed through the sensing interfaces of an affected system. An attacker could exploit this vulnerability by sending crafted packets through a t...

Affected product and versions

Product
Cisco Firepower Threat Defense and Cisco ASA with FirePOWER Module, secure firewall threat defense
Affected versions
>= Cisco Firepower Threat Defense and Cisco ASA with FirePOWER Module, 6.0.0, 6.0.1, 6.1.0, 6.1.0.2, 6.2.0, 6.2.1, 6.2.2
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Cisco Firepower Threat Defense and Cisco ASA with FirePOWER Module, secure firewall threat defense and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
CWE
CWE-399