Rule Category

BROWSER-IE -- Snort has detected traffic known to exploit vulnerabilities present in the Internet Explorer browser, or products that have the Trident or Tasman engines.

Alert Message

BROWSER-IE Microsoft Internet Explorer use after free attempt

Rule Explanation

This event is generated when an attempt is made to exploit a use after free condition in Microsoft Internet explorer. Impact: Attempted User Privilege Gain Details: Ease of Attack:

What To Look For

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

MITRE ATT&CK Framework

Tactic:

Technique:

For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org

CVE

Additional Links

Rule Vulnerability

CVE Additional Information

CVE-2017-11888
Microsoft Edge in Microsoft Windows 10 Gold, 1511, 1607, 1703, 1709, and Windows Server 2016 allows an attacker to execute arbitrary code in the context of the current user, due to how Microsoft Edge handles objects in memory, aka "Microsoft Edge Memory Corruption Vulnerability".
Details
Severity Base Score7.5
Impact Score5.9 Exploit Score1.6
Confidentiality ImpactHIGH Integrity ImpactHIGH
Availability ImpactHIGH Access Vector
Authentication Ease of Access
CVE-2018-8123
An information disclosure vulnerability exists when Microsoft Edge improperly handles objects in memory, aka "Microsoft Edge Information Disclosure Vulnerability." This affects Microsoft Edge. This CVE ID is unique from CVE-2018-1021.
Details
Severity Base Score4.3
Impact Score1.4 Exploit Score2.8
Confidentiality ImpactLOW Integrity ImpactNONE
Availability ImpactNONE Access Vector
Authentication Ease of Access
CVE-2018-8297
An information disclosure vulnerability exists when Microsoft Edge improperly handles objects in memory, aka "Microsoft Edge Information Disclosure Vulnerability." This affects Microsoft Edge. This CVE ID is unique from CVE-2018-8289, CVE-2018-8324, CVE-2018-8325.
Details
Severity Base Score4.3
Impact Score1.4 Exploit Score2.8
Confidentiality ImpactLOW Integrity ImpactNONE
Availability ImpactNONE Access Vector
Authentication Ease of Access