Netscape Communicator Javascript Bookmark Vulnerability
BID:260
Info
Netscape Communicator Javascript Bookmark Vulnerability
| Bugtraq ID: | 260 |
| Class: | Input Validation Error |
| CVE: | |
| Remote: | Yes |
| Local: | No |
| Published: | May 16 1999 12:00AM |
| Updated: | May 16 1999 12:00AM |
| Credit: | This vulnerability was discovered by Georgi Guninski <[email protected]>. |
| Vulnerable: |
Netscape Communicator 4.51 Netscape Communicator 4.07 |
| Not Vulnerable: | |
Discussion
Netscape Communicator Javascript Bookmark Vulnerability
A vulnerability in Netscape Communicator may allow a rouge web site that can convince a user to bookmark their site access to file in their computer.
Netscape Communicator stores user's bookmarks in an HTML file. If a rouge web site includes Javascript code inside a SCRIPT tag inside a web page's TITLE tag and get the user to bookmark the page, the Javascript will be saved in the user's bookmark file. The next time the bookmark file is opened, either by the user or a server redirect, the Javascript code will be executed in the security context of the local file. Guessing the name of the bookmark and using a redirect is not particularly difficult.
This allows the rouge Javascript to read the user's local file and browse the directories.
A vulnerability in Netscape Communicator may allow a rouge web site that can convince a user to bookmark their site access to file in their computer.
Netscape Communicator stores user's bookmarks in an HTML file. If a rouge web site includes Javascript code inside a SCRIPT tag inside a web page's TITLE tag and get the user to bookmark the page, the Javascript will be saved in the user's bookmark file. The next time the bookmark file is opened, either by the user or a server redirect, the Javascript code will be executed in the security context of the local file. Guessing the name of the bookmark and using a redirect is not particularly difficult.
This allows the rouge Javascript to read the user's local file and browse the directories.
Exploit / POC
Netscape Communicator Javascript Bookmark Vulnerability
Currently the SecurityFocus staff are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected].
Currently the SecurityFocus staff are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected].
Solution / Fix
Netscape Communicator Javascript Bookmark Vulnerability
Solution:
Disable Javascript or do not bookmark untrusted web pages.
Solution:
Disable Javascript or do not bookmark untrusted web pages.
References
Netscape Communicator Javascript Bookmark Vulnerability
References:
References:
- Netscape Communicator bookmark vulnerabilities (Georgi Guninski