Zero-day vulnerability in Adobe Flash Player

Cross-site scripting
CVE-2011-2107

The pay for an exploit might be around $5k-$10k at the moment.

Vulnerability details

Advisory: SB2011060501 - Cross-site scripting in Adobe Flash Player

Vulnerable component: Adobe Flash Player

CVE-ID: CVE-2011-2107

CVSSv3 score: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:F/RL:O/RC:C

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

Description:

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

The vulnerability exists due to insufficient sanitization of user-input. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in userтАЩs browser in context of website hosting an .swf file.

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.