What is the CVSS score of CVE-2019-16371?

CVE-2019-16371 has a CVSS 3.1 base score of 8.2 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N. EPSS exploitation probability: 1.2%.

Is there a public PoC exploit available for CVE-2019-16371?

Yes, a public proof-of-concept exploit is available for CVE-2019-16371. Prioritise patching immediately. EPSS: 1.2%.

Lastpass CVE-2019-16371

HIGH

Improper Restriction of Rendered UI Layers or Frames (CWE-1021)

2019-09-16 cve@mitre.org

XSS Lastpass

8.2

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.2 HIGH

AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

Low

Availability

None

Lifecycle Timeline

CVE Published

Sep 16, 2019 - 18:15 nvd

HIGH 8.2

DescriptionNVD

AnalysisAI

LogMeIn LastPass before 4.33.0 allows attackers to construct a crafted web site that captures the credentials for a victim's account on a previously visited web site, because do_popupregister can be. Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-1021. LogMeIn LastPass before 4.33.0 allows attackers to construct a crafted web site that captures the credentials for a victim's account on a previously visited web site, because do_popupregister can be bypassed via clickjacking. Affected products include: Logmein Lastpass. Version information: before 4.33.0.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.