CVE-2022-38436 in Illustrator
Summary
by MITRE • 10/25/2022
Adobe Illustrator versions 26.4 (and earlier) and 25.4.7 (and earlier) are affected by an out-of-bounds read vulnerability when parsing a crafted file, which could result in a read past the end of an allocated memory structure. An attacker could leverage this vulnerability to execute code in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.
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Analysis
by VulDB Data Team • 11/19/2022
Adobe Illustrator versions 26.4 and earlier as well as 25.4.7 and earlier contain a critical out-of-bounds read vulnerability designated as CVE-2022-38436 that arises during the parsing of specially crafted files. This vulnerability stems from inadequate bounds checking within the software's file parsing mechanisms, specifically when processing certain vector graphics elements. The flaw manifests as an out-of-bounds memory read operation that occurs when the application attempts to access memory locations beyond the boundaries of allocated data structures. This type of vulnerability falls under the Common Weakness Enumeration category CWE-129, which specifically addresses insufficient checking for buffer overflows and out-of-bounds accesses. The vulnerability exists in the core file parsing logic where Illustrator fails to properly validate the size and structure of incoming data before attempting to read from memory locations that may not be accessible or may contain arbitrary data.
The operational impact of this vulnerability is severe as it provides a potential pathway for remote code execution within the context of the currently logged-in user. An attacker who successfully crafts a malicious Illustrator file could deliver this payload through various means including email attachments, web downloads, or malicious websites. The exploitation process requires user interaction, meaning victims must actively open the malicious file for the attack to succeed. This user interaction requirement does not mitigate the severity of the vulnerability, as social engineering techniques can effectively trick users into opening seemingly legitimate files. The memory read operation that triggers the vulnerability could potentially expose sensitive memory contents or cause the application to crash, but more critically, it could be leveraged to inject and execute arbitrary code. This execution occurs within the privileges of the user running Illustrator, potentially allowing attackers to access sensitive data, modify files, or establish persistence on the compromised system.
The attack surface for this vulnerability extends beyond simple file execution as it represents a significant risk to creative professionals who frequently handle design files from external sources. Illustrator users often collaborate with clients, freelancers, or team members who may inadvertently provide compromised files, making this attack vector particularly dangerous in professional environments. The vulnerability demonstrates a classic weakness in software security where insufficient input validation leads to memory corruption issues that can be exploited for code execution. From an attack framework perspective, this vulnerability aligns with the MITRE ATT&CK technique T1059.001 for command and scripting interpreter, as successful exploitation could enable attackers to execute arbitrary commands on the victim's system. Organizations should consider this vulnerability as part of a broader attack chain where initial compromise may occur through file-based attacks, potentially leading to more sophisticated exploitation techniques. The vulnerability's impact is amplified in environments where Illustrator is frequently used for handling sensitive design work or when users have elevated privileges within the network.
Mitigation strategies for CVE-2022-38436 should prioritize immediate software updates from Adobe, as the vendor has released patches addressing this specific vulnerability. Organizations should implement strict file validation procedures and consider deploying sandboxing solutions for handling untrusted Illustrator files. Network-based protections such as email filtering and web content filtering can help prevent delivery of malicious files to users. Security teams should monitor for indicators of compromise related to this vulnerability and implement user awareness training to reduce the effectiveness of social engineering attacks. Additionally, system hardening measures including application whitelisting and privilege separation can reduce the potential impact if exploitation occurs. The vulnerability highlights the importance of regular security updates and the need for robust input validation in creative software applications that process complex file formats. Organizations should also consider implementing automated patch management systems to ensure timely deployment of security fixes across all affected systems. Given the nature of the vulnerability, regular security assessments of creative software environments are recommended to identify and remediate similar issues before they can be exploited by malicious actors.