Advisory Details

April 15th, 2021

Adobe Bridge HEIC File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability

ZDI-21-413
ZDI-CAN-12391

CVE ID CVE-2021-21091
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 Bridge
VULNERABILITY DETAILS

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Adobe Bridge. 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 parsing of HEIC files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated structure. 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/bridge/apsb21-23.html
DISCLOSURE TIMELINE
  • 2020-12-09 - Vulnerability reported to vendor
  • 2021-04-15 - Coordinated public release of advisory
CREDIT Francis Provencher {PRL}
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