Published advisory · ZDI-22-1431

Adobe Acrobat Reader DC Font Parsing Out-Of-Bounds Read Information Disclosure Vulnerability

Published Rocco Calvi
CVSS severity 3.3/ 10.0 · Low AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Vulnerability analysis

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 fonts. Crafted data in a font can trigger a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process.

Disclosure timeline

  1. Vulnerability reported to vendor
  2. Coordinated public release of advisory

References