This attack could pose a serious security threat. You should take immediate action to stop any damage or prevent further damage from happening.
This signature detects a buffer overflow vulnerability in Adobe Flash Player.
Adobe Flash Player is a multimedia application for multiple platforms.
Adobe Flash Player is prone to a remote code-execution vulnerability in 'sequenceParameterSetNALUnit' component. Specifically, this issue occurs due to improper validation of 'num_ref_frames_in_pic_order_cnt_cycle' value and user supplied data from 'offset_for_ref_frame' into a fixed length stack buffer.
An attacker can exploit this issue to execute arbitrary code in the context of the user running the affected application. Failed exploit attempts will likely result in denial-of-service conditions.