Microsoft Internet Explorer Use-After-Free Vulnerability

Exploited · KEV 2024-07-23Metasploit moduleCVE-2012-4792CWE-416

Exploited since 2024-07-23. No WAF vendor names it yet.

Edge rules

0/8

Our test

No exploit yet

CVSS

8.8

EPSS

78.8% Top 0.4%

Posts, 14d

Published

2012-12-30

Use-after-free vulnerability in Microsoft Internet Explorer 6 through 8 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to an object that (1) was not properly allocated or (2) is deleted, as… More

Edge coverage

Claimed by vendors

CloudflareBefore feed historyOlder than its feed AWSBefore feed historyOlder than its feed Microsoft AzureNo public claimNot named Google CloudBefore feed historyOlder than its feed FastlyBefore feed historyOlder than its feed F5Before feed historyOlder than its feed AkamaiNo public sourceNo public changelog OWASP CRSBefore feed historyOlder than its feed

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Ask about CVE-2012-4792: who's covered, what to patch first, how vendors compare. I cite sources and won't help with attacks.

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Severity, decoded

CVSS 3.1

8.8High

High · 8.8 / 10

Exploitable over the network, with no privileges and user interaction, leading to full loss of confidentiality, integrity and availability.

Over the internetNo login neededNeeds a user to actWorks reliablyFull compromise

How the score is built8 metrics

Attack vectorAn attacker can reach it over the internet; no access to your network needed.
Network
Attack complexityNo special conditions are needed; the attack works reliably.
Low
Privileges requiredNo account or login is needed.
None
User interactionA user has to do something first, such as open a file or click a link.
Required
ScopeThe damage stays within the vulnerable component.
Unchanged
Confidentiality impactAn attacker can read all data the affected component holds, or the most sensitive parts of it.
High
Integrity impactAn attacker can change any data or files the affected component protects.
High
Availability impactAn attacker can take the component down completely or keep it from serving anyone.
High

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

CISA's assessmentSSVC, from the CVE record

ExploitationActive

Attackers are exploiting this in the wild.

AutomatableNo

At least one step needs hands-on work, which slows mass attacks.

Technical impactTotal

A successful attack gives full control over the affected software or all of its data.

Public exploits

3 found

1 Metasploit2 Exploit-DB0 Scanner template0 GitHub PoCs

MetasploitMS13-008 Microsoft Internet Explorer CButton Object Use-After-Free Vulnerability2012-12-27 · exploit · rank Normal
Exploit-DBMicrosoft Internet Explorer - CButton Object Use-After-Free (Metasploit)2013-01-02 · remote · windows · verified
Exploit-DBMicrosoft Internet Explorer - CDwnBindInfo Object Use-After-Free (Metasploit)2012-12-31 · remote · windows · verified

Links are to third-party code: never run it outside an isolated lab.

Timeline

2012-12-27
Metasploit module published
MS13-008 Microsoft Internet Explorer CButton Object Use-After-Free Vulnerability
2012-12-30
CVE published
CVE List
2012-12-31
Exploit published on Exploit-DB
Microsoft Internet Explorer - CDwnBindInfo Object Use-After-Free (Metasploit)
2024-07-23
Added to CISA KEV
Confirmed exploitation in the wild