ReviewHigh

CVE-2018-1154

Tenable SecurityCenter, security center

In SecurityCenter versions prior to 5.7.0, a username enumeration issue could allow an unauthenticated attacker to automate the discovery of username aliases via brute force, ultimately facilitating unauthorized access. Server response output has been unified to correct this issue.

CVSS
8.8
EPSS
0.67%
49.7% percentile
CISA KEV
Not listed
Published
2018.08.03
PRIORITY ASSESSMENT

Review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.67%
Technical severityCVSS 8.8

Vulnerability overview

In SecurityCenter versions prior to 5.7.0, a username enumeration issue could allow an unauthenticated attacker to automate the discovery of username aliases via brute force, ultimately facilitating unauthorized access. Server response output has been unified to correct this issue.

Affected product and versions

Product
Tenable SecurityCenter, security center
Affected versions
>= All versions prior to 5.7.0, < 5.7.0
Fixed versions
Verify the fixed release separately for each affected product line

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Tenable SecurityCenter, security center 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:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
Not available