XSS in Mozilla Firefox

1) Cross-site scripting

EUVDB-ID: #VU2680

Risk: Medium

CVSSv4.0: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:A/U:Green]

CVE-ID: CVE-2009-1308

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient validation of user-supplied input when processing XBL bindings. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user’s browser in 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.

Note: the vulnerability was being actively exploited.

Mitigation

Update to version 3.0.9.

Vulnerable software versions

Mozilla Firefox: 0.1 - 3.0.9

CPE2.3

• cpe:2.3:a:mozilla:mozilla_firefox:0.1:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:mozilla_firefox:0.2:*:*:*:*:*:*:*
• cpe:2.3:a:mozilla:mozilla_firefox:0.3:*:*:*:*:*:*:*

External links

https://www.mozilla.org/en-US/security/advisories/mfsa2009-18/

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.