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CVE Descriptions
HelpViewer in Mac OS X 10.3.3 and 10.2.8 processes scripts that it did not initiate, which can allow attackers to execute arbitrary code, an issue that was originally reported as a directory traversal vulnerability in the Safari web browser using the runscript parameter in a help: URI handler.
CVE Informations
Metrics
| Metrics | Score | Severity | CVSS Vector | Source |
|---|---|---|---|---|
| V2 | 7.6 | AV:N/AC:H/Au:N/C:C/I:C/A:C | 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 : 24121
Publication date : 2004-05-16 22h00 +00:00
Author : Troels Bay
EDB Verified : Yes
source: https://www.securityfocus.com/bid/10356/info
It has been reported that Mac OS X may be prone to a vulnerability that could allow a remote attacker to execute arbitrary script code on a vulnerable system.
The issue presents itself due to the 'help:' protocol implemented by the Mac OS X help application. It has been reported that the 'help:' protocol can be invoked remotely by the Safari web browser. This could allow an attacker to craft a malicious link and entice a user to follow the link in order to execute script code via the help application. It has been reported that this issue can be exploited to execute arbitrary code with minimal user interaction. Reportedly, an attacker can exploit this issue by simply enticing a user to visit a malicious site.
An attacker can also use HTML email as an attack vector to exploit this vulnerability. For example, an attacker can embed HTML into Apple Mail and send it as a link to a vulnerable user. If the user follows the link, script code will be executed.
Successful exploitation of this issue may allow a remote attacker to gain unauthorized access to a vulnerable system in the context of an affected user.
Mac OS X 10.3 is reported to be prone to this issue, however, it is possible that prior versions are affected as well. Other web browsers that support the 'help:' protocol may also present an attack vector for this issue.
help:runscript=../../Scripts/Info Scripts/Current Date & Time.scpt
The following proof of concept is available as well:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
? ? <meta content="text/html;charset=ISO-8859-1"
http-equiv="Content-Type">
? ? <title></title>
</head>
<body bgcolor="#ffffff" text="#000000">
<a
? href="help:runscript=MacHelp.help/Contents/Resourc
es/English.lproj/shrd/OpnApp.scpt%20string=%27usr: bin:du%27">Click to
go to your next message</a><br>
</body>
</html>
Products Mentioned
Configuraton 0
Apple>>Mac_os_x >> Version 10.3
- Apple>>Mac_os_x >> Version 10.3 (Open CPE detail)
Apple>>Mac_os_x >> Version 10.3.1
- Apple>>Mac_os_x >> Version 10.3.1 (Open CPE detail)
Apple>>Mac_os_x >> Version 10.3.2
- Apple>>Mac_os_x >> Version 10.3.2 (Open CPE detail)
Apple>>Mac_os_x >> Version 10.3.3
- Apple>>Mac_os_x >> Version 10.3.3 (Open CPE detail)
Apple>>Mac_os_x_server >> Version 10.3
- Apple>>Mac_os_x_server >> Version 10.3 (Open CPE detail)
Apple>>Mac_os_x_server >> Version 10.3.1
- Apple>>Mac_os_x_server >> Version 10.3.1 (Open CPE detail)
Apple>>Mac_os_x_server >> Version 10.3.2
- Apple>>Mac_os_x_server >> Version 10.3.2 (Open CPE detail)
Apple>>Mac_os_x_server >> Version 10.3.3
- Apple>>Mac_os_x_server >> Version 10.3.3 (Open CPE detail)
References
http://lists.apple.com/mhonarc/security-announce/msg00053.html
Tags : vendor-advisory, x_refsource_APPLE
Tags : vendor-advisory, x_refsource_APPLE
http://archives.neohapsis.com/archives/fulldisclosure/2004-05/0837.html
Tags : mailing-list, x_refsource_FULLDISC
Tags : mailing-list, x_refsource_FULLDISC
