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Research > Zero-Day Tracker > 20070407

Microsoft DNS RPC Buffer Overflow

Date Disclosed:
4/7/2007

Date Patched:
05.08.2007

Vendor:
Microsoft

Affected Software:
Windows 2000
Windows 2003

Description:
A remote code execution vulnerability exists within Microsoft's DNS Server service. Utilizing RPC functionality designed for remote management, an attacker is able to anonymously cause a stack-based buffer overflow. This code is executed under the context of SYSTEM, allowing for full system compromise.

eEye Research is currently investigating the vulnerability and active exploitation and will update this ZDT entry as more information becomes available.

Severity:
High

Code Execution:
Yes

Impact:
Arbitrary code execution as SYSTEM
This vulnerability can be exploited anonymously against Microsoft's DNS Server, allowing for a remote attacker to run arbitrary code under SYSTEM in order to obtain full system access.

Mitigation:
Since a vendor-supplied patch has been released, the best form of mitigation is to apply MS07-029.

Protection:
eEye's Blink® Personal Edition protects from this vulnerability.
eEye's Blink® Professional Edition protects from this vulnerability.
eEye's Retina® Network Security Scanner scans devices to detect for this vulnerability.

Patch:
MS07-029

Links:
Microsoft Security Advisory (935964)
ISC Handler's Diary
CVE-2007-1748
Public PoC Code Disclosure (Reverse Shell)

Status:
4/7/2007: First Signs Of Active Exploitation
4/14/2007: First Exploit Tool Released
5/8/2007: MS07-029 Released

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