SB2020031806 - Multiple vulnerabilities in Delta Electronics Industrial Automation CNCSoft ScreenEditor

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Stack-based buffer overflow (CVE-ID: CVE-2020-7002)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing the GifName information in DPB files. A remote unauthenticated attacker can trick a victim to open a specially crafted file, trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

2) Out-of-bounds read (CVE-ID: CVE-2020-6976)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition when processing the Giffile information in DPB files. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.

Remediation

Install update from vendor's website.

References

• https://ics-cert.us-cert.gov/advisories/icsa-20-077-01
• https://www.zerodayinitiative.com/advisories/ZDI-20-309/
• https://www.zerodayinitiative.com/advisories/ZDI-20-308/
• https://www.zerodayinitiative.com/advisories/ZDI-20-310/