CVE-2013-2551

Microsoft Internet Explorer: Use-After-Free

As of , CVE-2013-2551 in Microsoft Internet Explorer is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.

Exploited
Yes: CISA listed it on 28 March 2022
US federal deadline
18 April 202221 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Known
EPSS score
0.74Higher than 99% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
0.91 on 28 March 2022EPSS on the day CISA listed it.
Public exploit
1 Metasploit module and 1 Exploit-DB entry (1 verified)
Fix
No vendor link in CISA's entry

What CISA says to do

Apply updates per vendor instructions.

CISA's required action

What the flaw is

Use-after-free vulnerability in Microsoft Internet Explorer allows remote attackers to execute remote code via a crafted web site that triggers access to a deleted object.

CISA's description

Use-after-free vulnerability in Microsoft Internet Explorer 6 through 10 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to a deleted object, as demonstrated by VUPEN during a Pwn2Own competition at CanSecWest 2013, aka "Internet Explorer Use After Free Vulnerability," a different vulnerability than CVE-2013-1308 and CVE-2013-1309.

The CVE record's description, from mitre

CVE published
11 March 2013
Assigned by
mitre
CVSS
8.8 High (CVSS 3.1, from CISA-ADP)
CWE-416
Use After Free
CISA SSVC, exploitation
active
CISA SSVC, automatable
no
CISA SSVC, technical impact
total

Timeline

  1. The CVE record was published.
  2. Exploit-DB published an exploit (EDB-ID 26175).
  3. CISA added it to its list of exploited vulnerabilities.
  4. The US federal deadline to fix it.

Public exploits

Facts from Metasploit's module list and Exploit-DB's index; we never copy exploit code.

Internet Explorer: other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2010-0249Use-After-FreeMicrosoft Internet ExplorerPatch this weekMetasploit module; EPSS 0.92; verified Exploit-DB entry0.92
CVE-2010-0806Use-After-FreeMicrosoft Internet ExplorerPatch this weekMetasploit module; EPSS 0.82; verified Exploit-DB entry0.82
CVE-2010-3962Uninitialized Memory CorruptionMicrosoft Internet ExplorerPatch this weekMetasploit module; EPSS 0.97; verified Exploit-DB entry0.97
CVE-2013-3893Resource Management ErrorsMicrosoft Internet ExplorerPatch this weekMetasploit module; EPSS 0.88; verified Exploit-DB entry0.88
CVE-2012-4792Use-After-FreeMicrosoft Internet ExplorerPatch this weekMetasploit module; EPSS 0.79; verified Exploit-DB entry0.79
CVE-2013-3163Memory CorruptionMicrosoft Internet ExplorerPatch this weekMetasploit module; EPSS 0.71; verified Exploit-DB entry0.71
CVE-2012-4969Use-After-FreeMicrosoft Internet ExplorerPatch this weekMetasploit module; EPSS 0.80; verified Exploit-DB entry0.80
CVE-2014-0322Use-After-FreeMicrosoft Internet ExplorerPatch this weekMetasploit module; EPSS 0.85; verified Exploit-DB entry0.85
CVE-2013-1347Remote Code ExecutionMicrosoft Internet ExplorerPatch this weekMetasploit module; EPSS 0.78; verified Exploit-DB entry0.78
CVE-2013-3897Use-After-FreeMicrosoft Internet ExplorerPatch this weekMetasploit module; EPSS 0.77; verified Exploit-DB entry0.77

All 36 entries for Internet Explorer

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