9116 : Netscape Network Security Services (NSS) Library SSLv2 Challenge Overflow
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Info

Last Modified
6 months ago

Percent Complete
100%

Disclosure
Aug 23, 2004

Discovery
Unknown

Dates

Exploit
Aug 25, 2004

Solution
Unknown

Keywords

 iPlanet

Description

 A remote overflow exists in the Network Security Services library. The library fails to validate the length of the "challenge" field during negotiation of the SSLv2 protocol. This library is used by many commercial and open-source products to provide SSL services. Affected applications include the Netscape Enterprise web server, the SunONE web, directory, and mail servers, and a large number of open-source application servers. Successful exploitation of this issue may result in arbitrary code execution with the privileges of the vulnerable service, leading to a lack of integrity.

Classification

 Location: Remote / Network Access
Attack Type: Input Manipulation
Impact: Loss of Integrity
Disclosure: OSVDB Verified

Solution

 The solution to this vulnerability depends on the affected application. In most situations, you can simply replace the NSS library with the latest version from the Mozilla Organization. Version 3.9.2 and newer of the NSS library are not vulnerable to this flaw. In the case of commercial applications, the vendor should be able to provide you with a patched version of the product. It is also possible to correct the flaw by implementing the following workaround(s):

Disable the SSLv2 protocol and all SSLv2 ciphers. The process for accomplishing this task depends on the specific application.

Products
Mozilla Organization
Watch-list
Network Security Services
Watch-list
 3.2
3.2.1
3.3
3.3.1
3.3.2
3.4
3.4.1
3.4.2
3.5
3.6
3.6.1
3.7.1
3.7.2
3.7.3
3.7.5
3.7.7
3.8
3.9
3.9.2
3.2
3.2.1
3.3
3.3.1
3.3.2
3.4
3.4.1
3.4.2
3.5
3.6
3.6.1
3.7.1
3.7.2
3.7.3
3.7.5
3.7.7
3.8
3.9
3.9.2
Sun Microsystems, Inc.
Watch-list
Java Enterprise System
Watch-list
 2004Q2
2004Q2
2003Q4
2003Q4

References

Tools & Filters
14361 14440

Snort

 15897 2656
2133 2134

Manual Testing Notes

Credit
  • Mark Dowd - Avertavertlabs.com - McAfee Avert(tm) Labs
  • Mark Dowd - Avertavertlabs.com - McAfee Avert(tm) Labs

CVSSv2 Score

CVSSv2 Base Score = 7.5
Source: nvd.nist.gov | Generated: 2005-06-15 | Disagree?

Access_vector_2 Access_complexity_2 Authentication_2 Confidentiality_impact_1 Integrity_impact_1 Availability_impact_1

Blogs

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