CVE-2015-7663

Vulnerability

A use-after-free vulnerability exists in Adobe Flash Player before 18.0.0.261 and 19.x before 19.0.0.245 on Windows and OS X, and before 11.2.202.548 on Linux, as well as in Adobe AIR before 19.0.0.241. The flaw is triggered via unspecified vectors, potentially through specially crafted SWF content [1][2].

Exploitation

An attacker can exploit this vulnerability by convincing a user to open a malicious SWF file, either by hosting it on a website or embedding it in an email. No authentication is required, and the attack can be performed remotely. The exact exploitation steps are not publicly disclosed [2][3].

Impact

Successful exploitation allows an attacker to execute arbitrary code in the context of the affected user's browser or Flash Player instance. This could lead to full system compromise, including data theft or installation of malware. The vulnerability is rated critical [1][2].

Mitigation

Adobe has released fixed versions: Flash Player 18.0.0.261, 19.0.0.245, and 11.2.202.548; AIR 19.0.0.241. Users should update immediately. Red Hat has provided updated packages for Red Hat Enterprise Linux 5 Supplementary, and Gentoo has issued a GLSA recommending upgrade [1][2][3].