Netscape Navigator Embedded Image URI Obfuscation Weakness
BID:10389
Info
Netscape Navigator Embedded Image URI Obfuscation Weakness
| Bugtraq ID: | 10389 |
| Class: | Design Error |
| CVE: |
CVE-2004-0528 |
| Remote: | Yes |
| Local: | No |
| Published: | May 19 2004 12:00AM |
| Updated: | Jul 12 2009 05:16AM |
| Credit: | http-equiv originally discovered this issue in Internet Explorer, Lyndon Durham reported that this weakness affects Netscape as well. |
| Vulnerable: |
Netscape Navigator 7.1 |
| Not Vulnerable: | |
Discussion
Netscape Navigator Embedded Image URI Obfuscation Weakness
It is reported that Netscape Navigator is prone to a URI obfuscation weakness that may hide the true contents of a URI link. The issue occurs when an image is contained within a properly formatted HREF tag.
This weakness could be employed to trick a user into following a malicious link.
An attacker can exploit this issue by supplying a malicious image that appears to be a URI link pointing to a page designed to mimic that of a trusted site. If an unsuspecting victim is to mouseover the link in an attempt to verify the authenticity of where it references, they may be deceived into believing that the link references the actual trusted site.
It is reported that Netscape Navigator is prone to a URI obfuscation weakness that may hide the true contents of a URI link. The issue occurs when an image is contained within a properly formatted HREF tag.
This weakness could be employed to trick a user into following a malicious link.
An attacker can exploit this issue by supplying a malicious image that appears to be a URI link pointing to a page designed to mimic that of a trusted site. If an unsuspecting victim is to mouseover the link in an attempt to verify the authenticity of where it references, they may be deceived into believing that the link references the actual trusted site.
Exploit / POC
Netscape Navigator Embedded Image URI Obfuscation Weakness
The following example is available:
<A HREF=http://www.example.com alt="http://www.example.com">
<IMG SRC="malware.gif" USEMAP="#malware" border=0
alt="http://www.example.com"></A>
<map NAME="malware" alt="http://www.example.com">
<area SHAPE=RECT COORDS="224,21" HREF="http://www.malware.com"
alt="http://www.example.com">
</MAP>
The following example is available:
<A HREF=http://www.example.com alt="http://www.example.com">
<IMG SRC="malware.gif" USEMAP="#malware" border=0
alt="http://www.example.com"></A>
<map NAME="malware" alt="http://www.example.com">
<area SHAPE=RECT COORDS="224,21" HREF="http://www.malware.com"
alt="http://www.example.com">
</MAP>
Solution / Fix
Netscape Navigator Embedded Image URI Obfuscation Weakness
Solution:
Currently we are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.
Solution:
Currently we are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.