CVE-2024-27339 is an out-of-bounds write vulnerability classified under CWE-787 affecting Kofax Power PDF version 5.0.0.57. The flaw exists in the PDF parsing component where user-supplied data is not properly validated, resulting in a write operation beyond the allocated buffer boundaries. This memory corruption can be exploited by an attacker who crafts a malicious PDF file or web page that, when opened or visited by the user, triggers the vulnerability. Successful exploitation allows arbitrary code execution within the context of the Power PDF process, potentially enabling full system compromise depending on the privileges of the user running the application. The vulnerability requires user interaction but no authentication, making it a significant risk especially in environments where users frequently open PDFs from untrusted sources. The CVSS v3.0 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability, with low attack complexity and no privileges required. Currently, no public exploits or patches are available, but the vulnerability was responsibly disclosed and tracked as ZDI-CAN-22925.

The impact of CVE-2024-27339 is substantial for organizations using the affected Kofax Power PDF version. Successful exploitation can lead to remote code execution, allowing attackers to run arbitrary code with the privileges of the user running the application. This can result in data theft, installation of malware, lateral movement within networks, and disruption of business operations. Since PDF files are commonly exchanged in business environments, the attack surface is broad. Organizations handling sensitive documents or operating in regulated industries face increased risk of data breaches and compliance violations. The requirement for user interaction limits automated exploitation but does not eliminate risk, especially in phishing or social engineering scenarios. The lack of a patch at present means organizations must rely on mitigations to reduce exposure until an official fix is released.

1. Restrict or monitor the use of Kofax Power PDF version 5.0.0.57, especially in high-risk environments. 2. Educate users to avoid opening PDF files from untrusted or unknown sources and to be cautious of unsolicited emails containing PDFs. 3. Implement network-level protections such as email filtering and web proxy controls to block or quarantine suspicious PDF files. 4. Use application whitelisting and endpoint detection and response (EDR) solutions to detect and prevent exploitation attempts. 5. Run Kofax Power PDF with the least privileges necessary to limit the impact of potential exploitation. 6. Monitor vendor channels closely for patches or updates addressing this vulnerability and apply them promptly once available. 7. Consider sandboxing or isolating PDF viewing applications to contain potential malicious activity. 8. Employ intrusion detection systems (IDS) tuned to detect anomalous behaviors related to PDF parsing or memory corruption attempts.