SRC-2019-0058 : Adobe Photoshop CC Type 2 Font Charstring callothersubr Type Confusion Remote Code Execution Vulnerability

CVE ID:

CVE-2019-7975

CVSS Score:

7.8, (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)

Affected Vendors:

Adobe

Affected Products:

Photoshop CC

Vulnerability Details:

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Adobe Photoshop CC. 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 processing of PostScript files. The issue results from the lack of proper validation of user-supplied data, which can result in a type confusion condition and subsequent out-of-bounds write on the stack. An attacker can leverage this vulnerability to execute code in the context of the current process.

Vendor Response:

Adobe has issued an update to correct this vulnerability. More details can be found at:
https://helpx.adobe.com/security/products/photoshop/apsb19-44.html

Disclosure Timeline:

• 2019-04-04 – Verified and acquired by iDefense
• 2019-08-15 – Coordinated public release of advisory

Credit:

This vulnerability was discovered by Steven Seeley (mr_me) of Source Incite

Acknowledgments:

Source Incite would like to acknowledge iDefense's Vulnerability Contributor Program for the help with co-ordination of this vulnerability.