Junkbuster ij_untrusted_url allows attacker access to referrer settings
| junkbuster-ijuntrustedurl-gain-access (20093) |  Medium Risk |
Description:
Junkbuster could allow a remote attacker to modify the referrer settings caused by a vulnerability in the ij_untrusted_url() function. If the proxy is configured as a single threaded mode (not the system default), a remote attacker could send a specially-crafted URL through the proxy to persuade the targeted user to click on the file. Once the file is opened, the attacker would be able to modify the referrer settings.
Platforms Affected:
- Debian, Debian Linux 3.0
- Gentoo, Linux
- Junkbusters, Junkbuster 2.x
Remedy:
For Gentoo Linux:
Upgrade to the latest version of junkbuster (2.0.2-r3 or later), as listed in GLSA 200504-11. See References.
For Debian GNU/Linux:
Refer to DSA-713-1 for patch, upgrade, or suggested workaround information. See References.
Consequences:
Gain Access
References:
- Bugzilla Bug 88537, www-proxy/junkbuster: configuration can be changed remotely when using single-threading at http://bugs.gentoo.org/show_bug.cgi?id=88537.
- Junkbuster Web site, Internet JUNKBUSTER Distribution Information at http://www.junkbusters.com/ijbdist.html.
- BID-13147: JunkBuster Configuration Modification Vulnerability
- CVE-2005-1108: The ij_untrusted_url function in JunkBuster 2.0.2-r2, with single-threaded mode enabled, allows remote attackers to overwrite the referrer field via a crafted HTTP request.
- DSA-713: junkbuster -- several vulnerabilities
- GLSA-200504-11: JunkBuster: Multiple vulnerabilities
- SA14932: Internet Junkbuster URL Filtering Vulnerabilities
Reported:
Apr 14, 2005
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