Cross-site scripting in s9y Serendipity

1) Cross-site scripting

EUVDB-ID: #VU42393

Risk: Low

CVSSv4.0: 2.7 [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/E:U/U:Clear]

CVE-ID: CVE-2013-5670

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

Exploit availability: No

Description

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.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Serendipity: 0.3 - 1.7

CPE2.3

• cpe:2.3:a:s9y_org:serendipity:0.3:*:*:*:*:*:*:*
• cpe:2.3:a:s9y_org:serendipity:0.4:*:*:*:*:*:*:*
• cpe:2.3:a:s9y_org:serendipity:0.7:*:*:*:*:*:*:*

External links

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

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.