Serendipity RSS feeds cross-site scripting

serendipity-rss-feeds-xss (38947) The risk level is classified as MediumMedium Risk

Description:

Serendipity is vulnerable to cross-site scripting, caused by improper validation of user-supplied input by the Remote RSS sidebar plugin. A remote attacker could exploit this vulnerability using links in RSS feeds to inject malicious script into a Web page which would be executed in a victim's Web browser within the security context of the hosting Web site, once the RSS feed is viewed. An attacker could use this vulnerability to steal the victim's cookie-based authentication credentials.

Platforms Affected:

  • Debian, Debian Linux 4.0
  • s9y, Serendipity prior to 1.2.1

Remedy:

Upgrade to the latest version of Serendipity (1.2.1 or later), available from the Serendipity Web site. See References.

Consequences:

Gain Access

References:

  • BugTraq Mailing List, Mon Dec 10 2007 - 08:01:46 CST, CVE-2007-6205 at http://archives.neohapsis.com/archives/today/0007.html.
  • Serendipity Web site, Serendipity 1.2.1 released at http://blog.s9y.org/.
  • BID-26783: S9Y Serendipity Remote RSS sidebar Plugin Cross Site Scripting Vulnerability
  • CVE-2007-6205: Cross-site scripting (XSS) vulnerability in the remote RSS sidebar plugin (serendipity_plugin_remoterss) in S9Y Serendipity before 1.2.1 allows remote attackers to inject arbitrary web script or HTML via a link in an RSS feed.
  • DSA-1528: serendipity -- insufficient input sanitising
  • FrSIRT/ADV-2007-4171: Serendipity Remote RSS Sidebar Plugin Cross Site Scripting Vulnerability
  • SA28012: Serendipity Remote RSS Sidebar Plugin Script Insertion

Reported:

Dec 08, 2007

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