Advisory Details

November 10th, 2020

Adobe Acrobat Reader DC ID Parameter Out-Of-Bounds Read Information Disclosure Vulnerability

ZDI-20-1354
ZDI-CAN-11540

CVE ID CVE-2020-24426
CVSS SCORE 3.3, (AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N)
AFFECTED VENDORS Adobe
AFFECTED PRODUCTS Acrobat Reader DC
VULNERABILITY DETAILS

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Adobe Acrobat Reader DC. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the handling of the ID parameter in the PDF trailer. By performing actions in JavaScript, an attacker can disclose the base address of AcroForm.api. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process.

ADDITIONAL DETAILS Adobe has issued an update to correct this vulnerability. More details can be found at:
https://helpx.adobe.com/security/products/acrobat/apsb20-67.html
DISCLOSURE TIMELINE
  • 2020-07-29 - Vulnerability reported to vendor
  • 2020-11-10 - Coordinated public release of advisory
CREDIT Mark Vincent Yason (@MarkYason)
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