Zero-day vulnerability in Adobe Flash Player

Code injection
CVE-2008-3873

Vulnerability details

Advisory: SB2008081801 - Code injection in Adobe Flash Player

Vulnerable component: Adobe Flash Player

CVE-ID: CVE-2008-3873

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N/E:F/RL:O/RC:C

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Description:

The vulnerability allows a remote attacker to hijack the clipboard on the target system.

The weakness exists due to error in the setClipboard() function. By persuading a victim view a specially crafted shockwave file, an attacker could exploit this vulnerability to insert persistent data into the clipboard.

Successful exploitation of the vulnerability results in modification of data on the vulnerable system.

Note: the vulnerability was being actively exploited.

External links:

https://www.adobe.com/support/security/bulletins/apsb08-18.html
https://www.adobe.com/support/security/advisories/apsa08-08.html

About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.