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Vulnerability Details : CVE-2003-0818

Multiple integer overflows in Microsoft ASN.1 library (MSASN1.DLL), as used in LSASS.EXE, CRYPT32.DLL, and other Microsoft executables and libraries on Windows NT 4.0, 2000, and XP, allow remote attackers to execute arbitrary code via ASN.1 BER encodings with (1) very large length fields that cause arbitrary heap data to be overwritten, or (2) modified bit strings.
Publish Date : 2004-03-03 Last Update Date : 2008-09-10
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- CVSS Scores & Vulnerability Types

Cvss Score
7.5
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access User
Vulnerability Type(s) Execute CodeOverflow
CWE ID CWE id is not defined for this vulnerability

- Related OVAL Definitions

Title Definition Id Class Family
Windows 2000 ASN.1 Library Integer Overflow Vulnerabilities oval:org.mitre.oval:def:653 windows
Windows NT ASN.1 Library Integer Overflow Vulnerabilities oval:org.mitre.oval:def:796 windows
Windows Server 2003 ASN.1 Library Integer Overflow Vulnerabilities oval:org.mitre.oval:def:799 windows
Windows XP ASN.1 Library Integer Overflow Vulnerabilities oval:org.mitre.oval:def:797 windows
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2003-0818

# Product Type Vendor Product Version Update Edition Language
1 OS Microsoft Windows 2000 SP1 Advanced Server Details Vulnerabilities
2 OS Microsoft Windows 2000 SP3 Advanced Server Details Vulnerabilities
3 OS Microsoft Windows 2000 SP1 Professional Details Vulnerabilities
4 OS Microsoft Windows 2000 SP3 Professional Details Vulnerabilities
5 OS Microsoft Windows 2000 SP1 Server Details Vulnerabilities
6 OS Microsoft Windows 2000 Advanced Server Details Vulnerabilities
7 OS Microsoft Windows 2000 SP3 Server Details Vulnerabilities
8 OS Microsoft Windows 2000 SP2 Advanced Server Details Vulnerabilities
9 OS Microsoft Windows 2000 Professional Details Vulnerabilities
10 OS Microsoft Windows 2000 SP2 Professional Details Vulnerabilities
11 OS Microsoft Windows 2000 Server Details Vulnerabilities
12 OS Microsoft Windows 2000 SP2 Server Details Vulnerabilities
13 OS Microsoft Windows 2003 Server R2 64-bit Details Vulnerabilities
14 OS Microsoft Windows 2003 Server R2 Datacenter 64-bit Details Vulnerabilities
15 OS Microsoft Windows 2003 Server WEB Details Vulnerabilities
16 OS Microsoft Windows 2003 Server Enterprise 64-bit Details Vulnerabilities
17 OS Microsoft Windows 2003 Server Enterprise 64-bit Details Vulnerabilities
18 OS Microsoft Windows 2003 Server Standard 64-bit Details Vulnerabilities
19 OS Microsoft Windows Nt 4.0 SP5 Workstation Details Vulnerabilities
20 OS Microsoft Windows Nt 4.0 Terminal Server Details Vulnerabilities
21 OS Microsoft Windows Nt 4.0 SP4 Server Details Vulnerabilities
22 OS Microsoft Windows Nt 4.0 SP2 Terminal Server Details Vulnerabilities
23 OS Microsoft Windows Nt 4.0 SP6 Server Details Vulnerabilities
24 OS Microsoft Windows Nt 4.0 Workstation Details Vulnerabilities
25 OS Microsoft Windows Nt 4.0 SP4 Terminal Server Details Vulnerabilities
26 OS Microsoft Windows Nt 4.0 SP2 Workstation Details Vulnerabilities
27 OS Microsoft Windows Nt 4.0 SP6 Terminal Server Details Vulnerabilities
28 OS Microsoft Windows Nt 4.0 SP1 Server Details Vulnerabilities
29 OS Microsoft Windows Nt 4.0 SP4 Workstation Details Vulnerabilities
30 OS Microsoft Windows Nt 4.0 SP3 Server Details Vulnerabilities
31 OS Microsoft Windows Nt 4.0 SP6 Workstation Details Vulnerabilities
32 OS Microsoft Windows Nt 4.0 SP1 Terminal Server Details Vulnerabilities
33 OS Microsoft Windows Nt 4.0 SP5 Server Details Vulnerabilities
34 OS Microsoft Windows Nt 4.0 SP3 Terminal Server Details Vulnerabilities
35 OS Microsoft Windows Nt 4.0 Sp6a Server Details Vulnerabilities
36 OS Microsoft Windows Nt 4.0 SP1 Workstation Details Vulnerabilities
37 OS Microsoft Windows Nt 4.0 SP5 Terminal Server Details Vulnerabilities
38 OS Microsoft Windows Nt 4.0 Server Details Vulnerabilities
39 OS Microsoft Windows Nt 4.0 SP3 Workstation Details Vulnerabilities
40 OS Microsoft Windows Nt 4.0 Sp6a Workstation Details Vulnerabilities
41 OS Microsoft Windows Nt 4.0 SP2 Server Details Vulnerabilities
42 OS Microsoft Windows Xp 64-bit Details Vulnerabilities
43 OS Microsoft Windows Xp Home Details Vulnerabilities
44 OS Microsoft Windows Xp Gold Professional Details Vulnerabilities
45 OS Microsoft Windows Xp SP1 64-bit Details Vulnerabilities
46 OS Microsoft Windows Xp SP1 Home Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Microsoft Windows 2000 12
Microsoft Windows 2003 Server 6
Microsoft Windows Nt 23
Microsoft Windows Xp 5

- References For CVE-2003-0818

http://marc.theaimsgroup.com/?l=bugtraq&m=107643892224825&w=2
BUGTRAQ 20040210 EEYE: Microsoft ASN.1 Library Bit String Heap Corruption
http://marc.theaimsgroup.com/?l=ntbugtraq&m=107650972617367&w=2
NTBUGTRAQ 20040210 EEYE: Microsoft ASN.1 Library Length Overflow Heap Corruption
http://technet.microsoft.com/en-us/security/bulletin/ms04-007
Microsoft Security Bulletin MS04-007
http://marc.theaimsgroup.com/?l=ntbugtraq&m=107650972723080&w=2
NTBUGTRAQ 20040210 EEYE: Microsoft ASN.1 Library Bit String Heap Corruption
http://www.kb.cert.org/vuls/id/216324
CERT-VN VU#216324
http://www.us-cert.gov/cas/techalerts/TA04-041A.html
CERT TA04-041A
http://www.kb.cert.org/vuls/id/583108
CERT-VN VU#583108
http://marc.theaimsgroup.com/?l=bugtraq&m=107643836125615&w=2
BUGTRAQ 20040210 EEYE: Microsoft ASN.1 Library Length Overflow Heap Corruption

- Metasploit Modules Related To CVE-2003-0818

Microsoft ASN.1 Library Bitstring Heap Overflow
This is an exploit for a previously undisclosed vulnerability in the bit string decoding code in the Microsoft ASN.1 library. This vulnerability is not related to the bit string vulnerability described in eEye advisory AD20040210-2. Both vulnerabilities were fixed in the MS04-007 patch. You are only allowed one attempt with this vulnerability. If the payload fails to execute, the LSASS system service will crash and the target system will automatically reboot itself in 60 seconds. If the payload succeeeds, the system will no longer be able to process authentication requests, denying all attempts to login through SMB or at the console. A reboot is required to restore proper functioning of an exploited system. This exploit has been successfully tested with the win32/*/reverse_tcp payloads, however a few problems were encounted when using the equivalent bind payloads. Your mileage may vary.


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