SB2013110504 - Cross-site scripting in s9y Serendipity

Description

This security bulletin contains information about 1 vulnerability.

1) Cross-site scripting (CVE-ID: CVE-2013-5670)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

Vulnerability allows a remote attacker to perform Cross-site scripting attacks.

An input validation error exists in spell-check-savedicts.php in the htmlarea SpellChecker module, as used in Serendipity before 1.7.3 and possibly other products, when processing to_r_list parameter. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in victim's browser in security context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• http://blog.s9y.org/archives/250-Serendipity-1.7.3-released.html
• http://www.opensyscom.fr/Actualites/serendipity-xss-vulnerability.html
• http://www.openwall.com/lists/oss-security/2013/09/01/1
• http://www.openwall.com/lists/oss-security/2013/09/01/3
• http://www.osvdb.org/87395