CVE-2013-1311 - Use After Free

Severity

93%

Complexity

86%

Confidentiality

165%

Use-after-free vulnerability in Microsoft Internet Explorer 8 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to a deleted object, aka "Internet Explorer Use After Free Vulnerability."

Use-after-free vulnerability in Microsoft Internet Explorer 8 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to a deleted object, aka "Internet Explorer Use After Free Vulnerability."

CVSS 2.0 Base Score 9.3. CVSS Attack Vector: network. CVSS Attack Complexity: medium. CVSS Vector: (AV:N/AC:M/Au:N/C:C/I:C/A:C).

Demo Examples

Use After Free

CWE-416

The following example demonstrates the weakness.


               
}
free(buf3R2);

Use After Free

CWE-416

The following code illustrates a use after free error:


               
}
free(ptr);
logError("operation aborted before commit", ptr);

When an error occurs, the pointer is immediately freed. However, this pointer is later incorrectly used in the logError function.

Overview

First reported 11 years ago

2013-05-15 03:36:00

Last updated 6 years ago

2018-10-12 22:04:00

Affected Software

Microsoft Internet Explorer 8

8

References

TA13-134A

Third Party Advisory, US Government Resource

MS13-037

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