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Research > Zero-Day Tracker > 20130320

Internet Explorer 9 Memory Disclosure

Date Disclosed:
3/20/2013

Date Patched:
Patched in MS13-055

Vendor:
Microsoft

Affected Software:
Internet Explorer 9

Description:
Internet Explorer 9 contains a memory disclosure vulnerability that may aid attackers in bypassing ASLR exploit mitigations. The memory disclosure is caused by a function improperly storing a return address in the stack.

Severity:
Moderate

Code Execution:
No. Requires a secondary exploit for code execution.

Impact:
Security Bypass
Use of this vulnerability may allow an attacker to gain insight into how certain information is stored in memory, and possibly bypass ASLR. When combined with a secondary vulnerability, an attacker may achieve remote code execution with the same rights as the currently logged on user.

Mitigation:
Internet Explorer 10 is not affected by this issue. Users of Internet Explorer 9 can upgrade to Internet Explorer 10.

Protection:
BeyondTrust's Retina® Network Security Scanner scans devices to detect for this vulnerability.

  • 18563 – Microsoft Internet Explorer 9 Memory Disclosure (Zero-Day)

Links:

Status:
2013-03-21: Original Disclosure
2013-07-09: Fixed in MS13-055

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