PoC Exploit for Adobe Acrobat Reader DC RCE Vulnerability (CVE-2023-21608) Released

A security researcher has released proof-of-concept (PoC) exploit code for a recently patched code execution vulnerability affecting Adobe Acrobat Reader DC software.

Tracked as CVE-2023-21608 (CVSS 7.8), the security defect was addressed with the January 2023 Patch Tuesday set of updates.

Adobe Acrobat Reader DC could allow a remote attacker to execute arbitrary code on the system, caused by a use-after-free error. By persuading a victim to open a specially-crafted document, an attacker could exploit this vulnerability to execute arbitrary code on the system with the privileges of the victim or cause the application to crash.

This flaw was reported to Adobe by security researchers–Ashfaq Ansari and Krishnakant Patil – HackSys Inc working with Trend Micro Zero Day Initiative.

Less than four weeks after Adobe published the security bulletin, the security researcher from Hacksysteam announced the release of PoC exploits code targeting the CVE-2023-21608 vulnerability.

“The specific flaw exists within the resetForm method. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process,” the researcher said.

In addition to PoC exploit code for CVE-2023-21608, two researchers published the technical details.

On the January 2023 Patch Tuesday, Adobe documented 15 distinct security flaws in the Acrobat and Reader software and urged users to apply the available updates immediately. The company said it was not aware of any exploits in the wild for any of the issues addressed in this batch of updates.