Remote code execution in Microsoft DNS server

1) Stack-based buffer overflow

EUVDB-ID: #VU1365

Risk: Critical

CVSSv3.1: 9.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C]

CVE-ID: CVE-2007-1748

CWE-ID: CWE-119 - Memory corruption

Exploit availability: Yes

Description

The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to boundary error when processing RPC requests in Microsoft Windows DNS server, which contain long zone name parameter with escaped octal strings.
A remote attacker can send a specially crafted RPC request to vulnerable DNS server, cause stack-based buffer overflow and execute arbitrary code on vulnerable system.

Successful exploitation of the vulnerability results in compromise of vulnerable system.

Note: this vulnerability is being actively exploited.

Mitigation

Install update from vendor's website:

• Microsoft Windows 2000 Server Service Pack 4 — Download the update
• Microsoft Windows Server 2003 Service Pack 1 and Microsoft Windows Server 2003 Service Pack 2 — Download the update
• Microsoft Windows Server 2003 with SP1 for Itanium-based Systems and Microsoft Windows Server 2003 with SP2 for Itanium-based Systems — Download the update
• Microsoft Windows Server 2003 x64 Edition and Microsoft Windows Server 2003 x64 Edition Service Pack 2 — Download the update

Vulnerable software versions

Windows: 2000

Windows Server: 2003

External links

http://technet.microsoft.com/en-us/library/security/ms07-029.aspx

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.