SB2019091037 - Multiple vulnerabilities in Windows GDI

Description

This security bulletin contains information about 2 vulnerabilities.

1) NULL pointer dereference (CVE-ID: CVE-2019-1286)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a NULL pointer dereference error within the Windows GDI component. A local user can create a specially crafted application to trigger an out-f-bounds write and execute arbitrary code on the system with elevated privileges.

2) Out-of-bounds read (CVE-ID: CVE-2019-1252)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the Windows GDI component. A local user can use a specially crafted application to trigger out-of-bounds read error and read contents of memory on the system.

Remediation

Install update from vendor's website.

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1286
• https://cpr-zero.checkpoint.com/vulns/cprid-2138/
• https://cpr-zero.checkpoint.com/assets/attachments/cprid-2138/poc.c
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1252