CVE-2021-36058 in XMP Toolkit SDK
Summary
by MITRE • 09/01/2021
XMP Toolkit SDK version 2020.1 (and earlier) is affected by an Integer Overflow vulnerability potentially resulting in application-level denial of service in the context of the current user. Exploitation requires user interaction in that a victim must open a crafted file.
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Analysis
by VulDB Data Team • 11/04/2025
The vulnerability identified as CVE-2021-36058 represents a critical integer overflow flaw within the XMP Toolkit SDK version 2020.1 and earlier releases. This issue resides in the core processing mechanisms of the toolkit responsible for handling extensible metadata platform files, which are extensively used across Adobe applications and various digital asset management systems. The vulnerability manifests when the toolkit processes malformed metadata structures that trigger arithmetic operations exceeding the maximum representable value for integer data types, creating a condition where the system's memory management becomes compromised. This particular flaw operates at the application level and specifically targets the current user context, meaning that exploitation requires direct user interaction through the opening of a maliciously crafted file.
The technical implementation of this vulnerability stems from inadequate input validation within the XMP Toolkit's metadata parsing routines. When processing specially constructed XMP packets, the toolkit performs arithmetic calculations on integer values that control memory allocation and buffer boundaries. The integer overflow occurs during these calculations, causing the resulting value to wrap around to a much smaller number, which subsequently leads to improper memory allocation or buffer overflows. This type of vulnerability falls under the CWE-190 category of Integer Overflow or Wraparound, which is classified as a fundamental weakness in software design that allows attackers to manipulate integer arithmetic operations. The specific nature of this vulnerability means that the attacker must convince a victim to open a crafted file containing malicious metadata, making it a user-initiated attack vector that aligns with the ATT&CK technique T1204.002 for Valid Accounts and T1204.001 for User Execution.
The operational impact of this vulnerability extends beyond simple application instability, as it creates a potential pathway for more severe security consequences. While the immediate effect is application-level denial of service where the targeted application crashes or becomes unresponsive, the broader implications suggest that this vulnerability could serve as a stepping stone for more sophisticated attacks. The denial of service aspect affects user productivity and system availability, particularly in enterprise environments where metadata processing is critical for document management and digital asset workflows. Organizations using affected versions of the XMP Toolkit SDK may experience cascading failures across multiple applications that depend on this metadata processing library, as the toolkit is widely integrated into Adobe Creative Suite products and various third-party document processing applications. The vulnerability's requirement for user interaction limits its automated exploitation potential but does not eliminate the risk, particularly in targeted campaigns where social engineering could be employed to deliver malicious files.
Mitigation strategies for CVE-2021-36058 should prioritize immediate patching of all affected systems running XMP Toolkit SDK version 2020.1 or earlier. Organizations must conduct comprehensive inventory assessments to identify all systems utilizing the vulnerable toolkit, including both Adobe applications and third-party software that may incorporate the SDK. The recommended approach involves upgrading to XMP Toolkit SDK version 2020.2 or later, which contains the necessary fixes for the integer overflow vulnerability. Additionally, implementing content filtering mechanisms at network perimeters and endpoint protection systems can help prevent the delivery of malicious files containing crafted metadata. Security teams should also establish monitoring protocols to detect unusual application behavior patterns that might indicate exploitation attempts. The vulnerability's classification as a medium severity issue according to CVSS scoring, combined with its requirement for user interaction, suggests that organizations should maintain vigilance in their security awareness training programs to prevent successful social engineering campaigns. Regular security assessments and vulnerability scanning should be conducted to ensure that no other components within the organization's software ecosystem are affected by similar integer overflow conditions, particularly in libraries that perform similar metadata processing functions.